diff --git a/config/demo_config.yaml b/config/demo_config.yaml
index 6b178f5e..d5ee7c77 100644
--- a/config/demo_config.yaml
+++ b/config/demo_config.yaml
@@ -11,7 +11,6 @@ memory_chat:
 memory_service:
   memory_chat_service:
     class: memory.service.chat_memory_service
-    history_msg_count: 32
     contextual_msg_count: 6
     memory_operations:
       read_message:
@@ -30,11 +29,11 @@ memory_service:
         workflow: info_filter,load_memory1,[get_observation|get_observation_with_time],contra_repeat,store_memory
         description: "write observation memories of the user"
         interval_time: 5
-#      summary_memory:
-#        class: memory.operation.summary_memory
-#        workflow: load_memory2,get_reflection_subject,update_insight,long_contra_repeat,store_memory
-#        description: "summary observation memories of the user"
-#        interval_time: 60
+      summary_memory:
+        class: memory.operation.summary_memory
+        workflow: load_memory2,get_reflection_subject,update_insight,long_contra_repeat,store_memory
+        description: "summary observation memories of the user"
+        interval_time: 30
 
 worker:
   dummy:
@@ -76,6 +75,7 @@ worker:
   info_filter:
     class: memory.worker.write.info_filter_worker
     generation_model: dashscope_generation
+    preserved_scores: 2,3
     info_filter_msg_max_size: 200
     generation_model_top_k: 1
   load_memory1:
@@ -110,7 +110,7 @@ worker:
   get_reflection_subject:
     class: memory.worker.summary.get_reflection_subject_worker
     retrieve_top_k: 100
-    reflect_obs_cnt_threshold: 32
+    reflect_obs_cnt_threshold: 10
     generation_model_top_k: 1
   update_insight:
     class: memory.worker.summary.update_insight_worker
diff --git a/memory_scope/chat/base_memory_chat.py b/memory_scope/chat/base_memory_chat.py
index f647cb98..f15386a3 100644
--- a/memory_scope/chat/base_memory_chat.py
+++ b/memory_scope/chat/base_memory_chat.py
@@ -1,5 +1,7 @@
 from abc import ABCMeta, abstractmethod
 
+from memory_scope.memory.service.base_memory_service import BaseMemoryService
+
 
 class BaseMemoryChat(metaclass=ABCMeta):
 
@@ -10,5 +12,9 @@ class BaseMemoryChat(metaclass=ABCMeta):
         :return:
         """
 
+    @property
+    def memory_service(self) -> BaseMemoryService:
+        raise NotImplementedError
+
     def run(self):
         pass
diff --git a/memory_scope/chat/cli_memory_chat.py b/memory_scope/chat/cli_memory_chat.py
index 5b49251c..646fcc64 100644
--- a/memory_scope/chat/cli_memory_chat.py
+++ b/memory_scope/chat/cli_memory_chat.py
@@ -76,7 +76,7 @@ class CliMemoryChat(BaseMemoryChat):
             self._generation_model = G_CONTEXT.model_dict[self._generation_model]
         return self._generation_model
 
-    def chat_with_memory(self, query: str, remember_response:bool=False) -> ModelResponse | ModelResponseGen:
+    def chat_with_memory(self, query: str, remember_response: bool = False) -> ModelResponse | ModelResponseGen:
         new_message: Message = Message(role=MessageRoleEnum.USER.value, role_name=self.human_name, content=query)
         self.memory_service.add_messages(new_message)
 
@@ -107,7 +107,7 @@ class CliMemoryChat(BaseMemoryChat):
             assert not self.stream
             generated.message.role_name = self.assistant_name
             self.memory_service.add_messages(generated.message)
-        
+
         # return response or generator
         return generated
 
@@ -217,5 +217,3 @@ class CliMemoryChat(BaseMemoryChat):
                 traceback.print_exc()
                 self.logger.exception(f"An exception occurred when running cli memory chat. args={e.args}.")
                 continue
-
-        questionary.print(f"A memory writing thread is still running, please be patient and wait!")
diff --git a/memory_scope/chat/cli_memory_chat.yaml b/memory_scope/chat/cli_memory_chat.yaml
index 5bf8da82..509a5399 100644
--- a/memory_scope/chat/cli_memory_chat.yaml
+++ b/memory_scope/chat/cli_memory_chat.yaml
@@ -4,8 +4,10 @@ system_prompt:
   en: |
     You are a helpful assistant, your name is MemoryScope.
 
+# 请记住以下信息，他们可以帮助更好地理解用户的问题。
 memory_prompt:
   cn: |
-    请记住以下信息，他们可以帮助更好地理解用户的问题。
+    如果用户问题和以下信息没有关联，请忘记这些信息；如果用户问题和以下信息有关联，请记住这些信息，他们可以帮助更好地理解用户的问题。
   en: |
-    Please remember the following information, as they can help better understand the user's question.
\ No newline at end of file
+    If the user's question is not related to the following information, please disregard it; if the user's question is related to the following information, please retain it, as it can help better understand the user's query.
+
diff --git a/memory_scope/cli.py b/memory_scope/cli.py
index 829743ed..02fb5736 100644
--- a/memory_scope/cli.py
+++ b/memory_scope/cli.py
@@ -1,6 +1,8 @@
 import datetime
 import sys
 
+import questionary
+
 sys.path.append(".")  # noqa: E402
 
 import json
@@ -16,7 +18,7 @@ from memory_scope.enumeration.model_enum import ModelEnum
 from memory_scope.utils.global_context import G_CONTEXT
 from memory_scope.utils.logger import Logger
 from memory_scope.utils.timer import timer
-from memory_scope.utils.tool_functions import init_instance_by_config
+from memory_scope.utils.tool_functions import init_instance_by_config, camelcase_to_underscore
 
 
 class MemoryScope(object):
@@ -24,7 +26,8 @@ class MemoryScope(object):
     def __init__(self):
         self.config: Dict[str, Any] = {}
         datetime_suffix = datetime.datetime.now().strftime('%Y%m%d_%H%M%S')
-        self.logger: Logger = Logger.get_logger(f"cli_job_{datetime_suffix}", to_stream=False)
+        class_name = camelcase_to_underscore(self.__class__.__name__)
+        self.logger: Logger = Logger.get_logger(f"{class_name}_{datetime_suffix}", to_stream=False)
 
     def load_config(self, path: str):
         with open(path) as f:
@@ -40,7 +43,7 @@ class MemoryScope(object):
 
     @staticmethod
     def shutdown():
-        print('Gracefully executing the shutdown function...')
+        questionary.print('Gracefully executing the shutdown function...')
         G_CONTEXT.memory_store.close()
         G_CONTEXT.monitor.close()
         G_CONTEXT.thread_pool.shutdown()
@@ -80,24 +83,21 @@ class MemoryScope(object):
         # set worker config
         G_CONTEXT.worker_config = self.config["worker"]
 
-    @property
-    def default_service(self):
-        return list(G_CONTEXT.memory_service_dict.values())[0]
-
     @property
     def default_chat_handle(self):
         return list(G_CONTEXT.memory_chat_dict.values())[0]
 
+    @property
+    def default_service(self):
+        return self.default_chat_handle.memory_service
+
 
 class CliJob(MemoryScope):
 
     def run(self, config: str):
         self.load_config(config)
         self.init_global_content_by_config()
-
-        # with G_CONTEXT.thread_pool:
-        memory_chat = list(G_CONTEXT.memory_chat_dict.values())[0]
-        memory_chat.run()
+        self.default_chat_handle.run()
 
 
 if __name__ == "__main__":
diff --git a/memory_scope/constants/language_constants.py b/memory_scope/constants/language_constants.py
index f5f04d55..0999e2fb 100644
--- a/memory_scope/constants/language_constants.py
+++ b/memory_scope/constants/language_constants.py
@@ -159,3 +159,8 @@ DATATIME_KEY_MAP = {
         "Weekday": "weekday",
     }
 }
+
+TIME_INFER_WORD = {
+    LanguageEnum.CN: "推断时间",
+    LanguageEnum.EN: "Inference time"
+}
diff --git a/memory_scope/memory/service/chat_memory_service.py b/memory_scope/memory/service/chat_memory_service.py
index 143bdf8b..c8aa6188 100644
--- a/memory_scope/memory/service/chat_memory_service.py
+++ b/memory_scope/memory/service/chat_memory_service.py
@@ -6,7 +6,7 @@ from memory_scope.utils.tool_functions import init_instance_by_config
 
 
 class ChatMemoryService(BaseMemoryService):
-    def __init__(self, history_msg_count: int = 32, contextual_msg_count: int = 6, **kwargs):
+    def __init__(self, history_msg_count: int = 100, contextual_msg_count: int = 6, **kwargs):
         super().__init__(**kwargs)
         self.history_msg_count: int = history_msg_count
         self.contextual_msg_count: int = contextual_msg_count
diff --git a/memory_scope/memory/worker/memory_base_worker.py b/memory_scope/memory/worker/memory_base_worker.py
index f0511493..32448044 100644
--- a/memory_scope/memory/worker/memory_base_worker.py
+++ b/memory_scope/memory/worker/memory_base_worker.py
@@ -76,23 +76,26 @@ class MemoryBaseWorker(BaseWorker, metaclass=ABCMeta):
         return self.get_context(CONTEXT_MEMORY_DICT)
 
     def get_memories(self, keys: str | List[str]) -> List[MemoryNode]:
-        memories: List[MemoryNode] = []
+        memories: Dict[str, MemoryNode] = {}
         if isinstance(keys, str):
             keys = [keys]
 
         for key in keys:
             memory_ids: List[str] = self.get_context(key)
             if memory_ids:
-                memories.extend([self.contex_memory_dict[x] for x in memory_ids])
-        return memories
+                memories.update({x: self.contex_memory_dict[x] for x in memory_ids})
+        return list(memories.values())
 
-    def set_memories(self, key: str, nodes: MemoryNode | List[MemoryNode]):
+    def set_memories(self, key: str, nodes: MemoryNode | List[MemoryNode], log_repeat: bool = True):
         if nodes is None:
             nodes = []
         elif isinstance(nodes, MemoryNode):
             nodes = [nodes]
         for node in nodes:
             if node.memory_id in self.contex_memory_dict:
+                if log_repeat:
+                    self.logger.warning(f"repeated_id memory id={node.memory_id} content={node.content} "
+                                        f"status={node.status}")
                 continue
             self.contex_memory_dict[node.memory_id] = node
             self.logger.info(f"add to memory context memory id={node.memory_id} content={node.content} "
diff --git a/memory_scope/memory/worker/read/print_memory_worker.py b/memory_scope/memory/worker/read/print_memory_worker.py
index 58dfcbb7..58def939 100644
--- a/memory_scope/memory/worker/read/print_memory_worker.py
+++ b/memory_scope/memory/worker/read/print_memory_worker.py
@@ -20,23 +20,26 @@ class PrintMemoryWorker(MemoryBaseWorker):
         i = 0
         j = 0
         k = 0
+        expired_content_set = set()
         for node in memory_node_list:
+            dt_handler = DatetimeHandler(node.timestamp)
+            dt = dt_handler.datetime_format("%Y%m%d %H:%M:%S")
+            line = f"{dt} {node.content}"
             if MemoryNodeStatus(node.status) is MemoryNodeStatus.EXPIRED:
-                i += 1
-                line = f"  {i} {node.content}"
-                expired_content_list.append(line)
+                if node.content in expired_content_set:
+                    continue
+                else:
+                    expired_content_set.add(node.content)
+                    i += 1
+                    expired_content_list.append(f"  {i} {line}")
 
             elif MemoryTypeEnum(node.memory_type) in [MemoryTypeEnum.OBSERVATION, MemoryTypeEnum.OBS_CUSTOMIZED]:
                 j += 1
-                dt_handler = DatetimeHandler(node.timestamp)
-                dt = dt_handler.datetime_format("%Y%m%d %H:%M:%S")
-                line = f"  {j} {dt} {node.content}"
-                obs_content_list.append(line)
+                obs_content_list.append(f"  {j} {line}")
 
             elif MemoryTypeEnum(node.memory_type) is MemoryTypeEnum.INSIGHT:
                 k += 1
-                line = f"  {k} {node.content}"
-                insight_content_list.append(line)
+                insight_content_list.append(f"  {k} {line}")
 
         obs_content = "\n".join(obs_content_list)
         insight_content = "\n".join(insight_content_list)
diff --git a/memory_scope/memory/worker/read/semantic_rank_worker.py b/memory_scope/memory/worker/read/semantic_rank_worker.py
index 2574b32a..e6d283b1 100644
--- a/memory_scope/memory/worker/read/semantic_rank_worker.py
+++ b/memory_scope/memory/worker/read/semantic_rank_worker.py
@@ -33,4 +33,4 @@ class SemanticRankWorker(MemoryBaseWorker):
         memory_node_list = sorted(memory_node_list, key=lambda n: n.score_rank, reverse=True)
         for node in memory_node_list:
             self.logger.info(f"rank_stage: content={node.content} score={node.score_rank}")
-        self.set_memories(RANKED_MEMORY_NODES, memory_node_list)
+        self.set_memories(RANKED_MEMORY_NODES, memory_node_list, log_repeat=False)
diff --git a/memory_scope/memory/worker/summary/get_reflection_subject_worker.py b/memory_scope/memory/worker/summary/get_reflection_subject_worker.py
index 365318c2..1d367a02 100644
--- a/memory_scope/memory/worker/summary/get_reflection_subject_worker.py
+++ b/memory_scope/memory/worker/summary/get_reflection_subject_worker.py
@@ -33,6 +33,7 @@ class GetReflectionSubjectWorker(MemoryBaseWorker):
         not_reflected_count = len(not_reflected_nodes)
         if not_reflected_count <= self.reflect_obs_cnt_threshold:
             self.logger.info(f"not_reflected_count={not_reflected_count} is not enough, stop.")
+            self.continue_run = False
             return
 
         # get profile_keys
diff --git a/memory_scope/memory/worker/write/contra_repeat_worker.py b/memory_scope/memory/worker/write/contra_repeat_worker.py
index efc506f6..1f4e6e03 100644
--- a/memory_scope/memory/worker/write/contra_repeat_worker.py
+++ b/memory_scope/memory/worker/write/contra_repeat_worker.py
@@ -83,10 +83,8 @@ class ContraRepeatWorker(MemoryBaseWorker):
             node: MemoryNode = all_obs_nodes[idx]
             if keep_flag != self.get_language_value(NONE_WORD):
                 node.status = MemoryNodeStatus.EXPIRED.value
+            self.logger.info(f"contra_repeat stage: {node.content} {node.status}")
             merge_obs_nodes.append(node)
 
-            # forbid keyword
-            self.logger.info(f"contra_repeat stage: {node.content} {node.status}")
-
         # save context
-        self.set_memories(MERGE_OBS_NODES, merge_obs_nodes)
+        self.set_memories(MERGE_OBS_NODES, merge_obs_nodes, log_repeat=False)
diff --git a/memory_scope/memory/worker/write/get_observation_worker.py b/memory_scope/memory/worker/write/get_observation_worker.py
index df0ebef6..72ed081c 100644
--- a/memory_scope/memory/worker/write/get_observation_worker.py
+++ b/memory_scope/memory/worker/write/get_observation_worker.py
@@ -1,7 +1,7 @@
 from typing import List
 
 from memory_scope.constants.common_constants import NEW_OBS_NODES, TIME_INFER
-from memory_scope.constants.language_constants import REPEATED_WORD, NONE_WORD, COLON_WORD
+from memory_scope.constants.language_constants import REPEATED_WORD, NONE_WORD, COLON_WORD, TIME_INFER_WORD
 from memory_scope.enumeration.memory_status_enum import MemoryNodeStatus
 from memory_scope.enumeration.memory_type_enum import MemoryTypeEnum
 from memory_scope.memory.worker.memory_base_worker import MemoryBaseWorker
@@ -30,6 +30,8 @@ class GetObservationWorker(MemoryBaseWorker):
         if time_infer:
             dt_info_dict = DatetimeHandler.extract_date_parts(input_string=time_infer)
             meta_data.update({f"event_{k}": str(v) for k, v in dt_info_dict.items()})
+            obs_content = (f"{obs_content} ({self.get_language_value(TIME_INFER_WORD)}"
+                           f"{self.get_language_value(COLON_WORD)} {time_infer})")
 
         return MemoryNode(user_name=self.user_name,
                           target_name=self.target_name,
diff --git a/memory_scope/memory/worker/write/info_filter_worker.py b/memory_scope/memory/worker/write/info_filter_worker.py
index 12055aeb..44fd52eb 100644
--- a/memory_scope/memory/worker/write/info_filter_worker.py
+++ b/memory_scope/memory/worker/write/info_filter_worker.py
@@ -69,7 +69,7 @@ class InfoFilterWorker(MemoryBaseWorker):
                 continue
 
             score = info_score[0]
-            if score in ("3",):
+            if score in self.preserved_scores:
                 msg.meta_data["info_score"] = score
                 filtered_messages.append(msg)
         self.chat_messages = filtered_messages
diff --git a/memory_scope/scheme/memory_node.py b/memory_scope/scheme/memory_node.py
index bf2dd5ee..b4072e66 100644
--- a/memory_scope/scheme/memory_node.py
+++ b/memory_scope/scheme/memory_node.py
@@ -6,7 +6,7 @@ from pydantic import Field, BaseModel
 
 
 class MemoryNode(BaseModel):
-    memory_id: str = Field(str(uuid4()), description="unique id for memory")
+    memory_id: str = Field(default_factory=lambda: uuid4().hex, description="unique id for memory")
 
     user_name: str = Field("", description="the user who owns the memory")
 
@@ -33,7 +33,8 @@ class MemoryNode(BaseModel):
 
     vector: List[float] = Field([], description="content embedding result, return empty")
 
-    timestamp: int = Field(int(datetime.datetime.now().timestamp()), description="timestamp of the memory node")
+    timestamp: int = Field(default_factory=lambda: int(datetime.datetime.now().timestamp()),
+                           description="timestamp of the memory node")
 
     dt: str = Field("", description="dt of the memory node")
 
diff --git a/memory_scope/storage/llama_index_es_memory_store_sync.py b/memory_scope/storage/llama_index_es_memory_store_sync.py
index 9279e64e..38919028 100644
--- a/memory_scope/storage/llama_index_es_memory_store_sync.py
+++ b/memory_scope/storage/llama_index_es_memory_store_sync.py
@@ -1,3 +1,4 @@
+import warnings
 from typing import Dict, List, Any, Optional, cast
 
 from llama_index.core import VectorStoreIndex
@@ -137,10 +138,13 @@ class LlamaIndexEsMemoryStoreSync(BaseMemoryStore):
                                                es_url=es_url,
                                                retrieval_strategy=_AsyncDenseVectorStrategy(hybrid=use_hybrid),
                                                **kwargs)
-        # use /dev/null
-        with open(os.devnull, 'w') as devnull:
+        # TODO The llamaIndex utilizes some deprecated functions, hence langchain logs warning messages. By
+        #  adding the following lines of code, the display of deprecated information is suppressed.
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore")
             self.index = VectorStoreIndex.from_vector_store(vector_store=self.es_store,
                                                             embed_model=self.embedding_model.model)
+
         self.index.build_index_from_nodes([TextNode(text="text")])
         self.logger = Logger.get_logger()
 
diff --git a/memory_scope/storage/llama_index_sync_elasticsearch.py b/memory_scope/storage/llama_index_sync_elasticsearch.py
index 3dad68bc..89ec5191 100644
--- a/memory_scope/storage/llama_index_sync_elasticsearch.py
+++ b/memory_scope/storage/llama_index_sync_elasticsearch.py
@@ -1,13 +1,19 @@
 """Elasticsearch vector store."""
 
-import asyncio
 from logging import getLogger
 from typing import Any, Callable, Dict, List, Literal, Optional, Union
 
 import nest_asyncio
 import numpy as np
 from elasticsearch import AsyncElasticsearch, Elasticsearch
-
+from elasticsearch.helpers.vectorstore import (
+    AsyncBM25Strategy,
+    AsyncSparseVectorStrategy,
+    AsyncDenseVectorStrategy,
+    AsyncRetrievalStrategy,
+    DistanceMetric,
+)
+from elasticsearch.helpers.vectorstore import VectorStore
 from llama_index.core.bridge.pydantic import PrivateAttr
 from llama_index.core.schema import BaseNode, MetadataMode, TextNode
 from llama_index.core.vector_stores.types import (
@@ -21,20 +27,10 @@ from llama_index.core.vector_stores.utils import (
     metadata_dict_to_node,
     node_to_metadata_dict,
 )
-from elasticsearch.helpers.vectorstore import AsyncVectorStore, VectorStore
-from elasticsearch.helpers.vectorstore import (
-    AsyncBM25Strategy,
-    AsyncSparseVectorStrategy,
-    AsyncDenseVectorStrategy,
-    AsyncRetrievalStrategy,
-    DistanceMetric,
-)
-
 from llama_index.vector_stores.elasticsearch.utils import (
     get_user_agent,
 )
 
-
 logger = getLogger(__name__)
 
 DISTANCE_STRATEGIES = Literal[
@@ -43,13 +39,14 @@ DISTANCE_STRATEGIES = Literal[
     "EUCLIDEAN_DISTANCE",
 ]
 
+
 def get_elasticsearch_client(
-    url: Optional[str] = None,
-    cloud_id: Optional[str] = None,
-    api_key: Optional[str] = None,
-    username: Optional[str] = None,
-    password: Optional[str] = None,
-    use_async: Optional[bool] = False,
+        url: Optional[str] = None,
+        cloud_id: Optional[str] = None,
+        api_key: Optional[str] = None,
+        username: Optional[str] = None,
+        password: Optional[str] = None,
+        use_async: Optional[bool] = False,
 ) -> AsyncElasticsearch:
     if url and cloud_id:
         raise ValueError(
@@ -126,7 +123,7 @@ def _to_llama_similarities(scores: List[float]) -> List[float]:
 
 
 def _mode_must_match_retrieval_strategy(
-    mode: VectorStoreQueryMode, retrieval_strategy: AsyncRetrievalStrategy
+        mode: VectorStoreQueryMode, retrieval_strategy: AsyncRetrievalStrategy
 ) -> None:
     """
     Different retrieval strategies require different ways of indexing that must be known at the
@@ -241,20 +238,21 @@ class SyncElasticsearchStore(BasePydanticVectorStore):
     retrieval_strategy: AsyncRetrievalStrategy
 
     _store = PrivateAttr()
+
     def __init__(
-        self,
-        index_name: str,
-        es_client: Optional[Any] = None,
-        es_url: Optional[str] = None,
-        es_cloud_id: Optional[str] = None,
-        es_api_key: Optional[str] = None,
-        es_user: Optional[str] = None,
-        es_password: Optional[str] = None,
-        text_field: str = "content",
-        vector_field: str = "embedding",
-        batch_size: int = 200,
-        distance_strategy: Optional[DISTANCE_STRATEGIES] = "COSINE",
-        retrieval_strategy: Optional[AsyncRetrievalStrategy] = None,
+            self,
+            index_name: str,
+            es_client: Optional[Any] = None,
+            es_url: Optional[str] = None,
+            es_cloud_id: Optional[str] = None,
+            es_api_key: Optional[str] = None,
+            es_user: Optional[str] = None,
+            es_password: Optional[str] = None,
+            text_field: str = "content",
+            vector_field: str = "embedding",
+            batch_size: int = 200,
+            distance_strategy: Optional[DISTANCE_STRATEGIES] = "COSINE",
+            retrieval_strategy: Optional[AsyncRetrievalStrategy] = None,
     ) -> None:
         nest_asyncio.apply()
 
@@ -310,13 +308,13 @@ class SyncElasticsearchStore(BasePydanticVectorStore):
 
     def close(self) -> None:
         return self._store.close()
-    
+
     def add(
-        self,
-        nodes: List[BaseNode],
-        *,
-        create_index_if_not_exists: bool = True,
-        **add_kwargs: Any,
+            self,
+            nodes: List[BaseNode],
+            *,
+            create_index_if_not_exists: bool = True,
+            **add_kwargs: Any,
     ) -> List[str]:
         """
         Add nodes to Elasticsearch index.
@@ -335,15 +333,15 @@ class SyncElasticsearchStore(BasePydanticVectorStore):
             ImportError: If elasticsearch['async'] python package is not installed.
             BulkIndexError: If AsyncElasticsearch async_bulk indexing fails.
         """
-        
+
         return self.sync_add(nodes, create_index_if_not_exists=create_index_if_not_exists)
-    
+
     def sync_add(
-        self,
-        nodes: List[BaseNode],
-        *,
-        create_index_if_not_exists: bool = True,
-        **add_kwargs: Any,
+            self,
+            nodes: List[BaseNode],
+            *,
+            create_index_if_not_exists: bool = True,
+            **add_kwargs: Any,
     ) -> List[str]:
         """
         Asynchronous method to add nodes to Elasticsearch index.
@@ -419,19 +417,19 @@ class SyncElasticsearchStore(BasePydanticVectorStore):
         return self._store.delete(query={"term": {"_id": ref_doc_id}}, **delete_kwargs)
 
     def query(
-        self,
-        query: VectorStoreQuery,
-        custom_query: Optional[
-            Callable[[Dict, Union[VectorStoreQuery, None]], Dict]
-        ] = None,
-        es_filter: Optional[List[Dict]] = None,
-        **kwargs: Any,
+            self,
+            query: VectorStoreQuery,
+            custom_query: Optional[
+                Callable[[Dict, Union[VectorStoreQuery, None]], Dict]
+            ] = None,
+            es_filter: Optional[List[Dict]] = None,
+            **kwargs: Any,
     ) -> VectorStoreQueryResult:
         """
         Query index for top k most similar nodes.
 
         Args:
-            query_embedding (List[float]): query embedding
+            query (List[float]): query embedding
             custom_query: Optional. custom query function that takes in the es query
                         body and returns a modified query body.
                         This can be used to add additional query
@@ -447,16 +445,16 @@ class SyncElasticsearchStore(BasePydanticVectorStore):
             Exception: If Elasticsearch query fails.
 
         """
-        return self.sync_query(query, custom_query, es_filter, **kwargs)    
-    
+        return self.sync_query(query, custom_query, es_filter, **kwargs)
+
     def sync_query(
-        self,
-        query: VectorStoreQuery,
-        custom_query: Optional[
-            Callable[[Dict, Union[VectorStoreQuery, None]], Dict]
-        ] = None,
-        es_filter: Optional[List[Dict]] = None,
-        **kwargs: Any,
+            self,
+            query: VectorStoreQuery,
+            custom_query: Optional[
+                Callable[[Dict, Union[VectorStoreQuery, None]], Dict]
+            ] = None,
+            es_filter: Optional[List[Dict]] = None,
+            **kwargs: Any,
     ) -> VectorStoreQueryResult:
         """
         Asynchronous query index for top k most similar nodes.
@@ -488,7 +486,7 @@ class SyncElasticsearchStore(BasePydanticVectorStore):
             query=query.query_str,
             query_vector=query.query_embedding,
             k=query.similarity_top_k,
-            num_candidates=100, # query.similarity_top_k * 10,
+            num_candidates=100,  # query.similarity_top_k * 10,
             filter=filter,
             custom_query=custom_query,
         )
@@ -531,14 +529,13 @@ class SyncElasticsearchStore(BasePydanticVectorStore):
             top_k_scores.append(hit.get("_rank", hit["_score"]))
 
         if (
-            isinstance(self.retrieval_strategy, AsyncDenseVectorStrategy)
-            and self.retrieval_strategy.hybrid
+                isinstance(self.retrieval_strategy, AsyncDenseVectorStrategy)
+                and self.retrieval_strategy.hybrid
         ):
             total_rank = sum(top_k_scores)
             top_k_scores = [(total_rank - rank) / total_rank for rank in top_k_scores]
             # top_k_scores = [total_rank - rank / total_rank for rank in top_k_scores]
 
-
         return VectorStoreQueryResult(
             nodes=top_k_nodes,
             ids=top_k_ids,
diff --git a/memory_scope/utils/datetime_handler.py b/memory_scope/utils/datetime_handler.py
index cdc93fc1..f274991d 100644
--- a/memory_scope/utils/datetime_handler.py
+++ b/memory_scope/utils/datetime_handler.py
@@ -143,9 +143,9 @@ class DatetimeHandler(object):
 
     @classmethod
     def extract_date_parts(cls, input_string: str) -> dict:
-        func_name = f"extract_date_parts_{G_CONTEXT.language}"
+        func_name = f"extract_date_parts_{G_CONTEXT.language.value}"
         if not hasattr(cls, func_name):
-            cls.logger.warning(f"language={G_CONTEXT.language} needs to complete extract_date_parts func!")
+            cls.logger.warning(f"language={G_CONTEXT.language.value} needs to complete extract_date_parts func!")
             return {}
         return getattr(cls, func_name)(input_string=input_string)
 
@@ -166,9 +166,9 @@ class DatetimeHandler(object):
 
     @classmethod
     def format_time_by_extract_time(cls, extract_time_dict: Dict[str, str], meta_data: Dict[str, str]) -> str:
-        func_name = f"format_time_by_extract_time_{G_CONTEXT.language}"
+        func_name = f"format_time_by_extract_time_{G_CONTEXT.language.value}"
         if not hasattr(cls, func_name):
-            cls.logger.warning(f"language={G_CONTEXT.language} needs to complete format_time_by_extract_time func!")
+            cls.logger.warning(f"language={G_CONTEXT.language.value} needs to complete format_time_by_extract_time func!")
             return ""
         return getattr(cls, func_name)(extract_time_dict, meta_data)
 
diff --git a/requirements.txt b/requirements.txt
index e01e87e9..c8f31c0d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,4 +13,5 @@ pydantic~=2.7.1
 dashscope~=1.19.1
 elasticsearch~=8.14.0
 pyyaml~=6.0.1
-ray
\ No newline at end of file
+ray~=2.31.0
+numpy~=1.26.4
\ No newline at end of file