diff --git a/configs/kb_config.py.exmaple b/configs/kb_config.py.exmaple
new file mode 100644
index 0000000..3ceee3c
--- /dev/null
+++ b/configs/kb_config.py.exmaple
@@ -0,0 +1,99 @@
+import os
+
+
+# 默认向量库类型。可选：faiss, milvus, pg.
+DEFAULT_VS_TYPE = "faiss"
+
+# 缓存向量库数量（针对FAISS）
+CACHED_VS_NUM = 1
+
+# 知识库中单段文本长度(不适用MarkdownHeaderTextSplitter)
+CHUNK_SIZE = 250
+
+# 知识库中相邻文本重合长度(不适用MarkdownHeaderTextSplitter)
+OVERLAP_SIZE = 50
+
+# 知识库匹配向量数量
+VECTOR_SEARCH_TOP_K = 3
+
+# 知识库匹配相关度阈值，取值范围在0-1之间，SCORE越小，相关度越高，取到1相当于不筛选，建议设置在0.5左右
+SCORE_THRESHOLD = 1
+
+# 搜索引擎匹配结题数量
+SEARCH_ENGINE_TOP_K = 3
+
+
+# Bing 搜索必备变量
+# 使用 Bing 搜索需要使用 Bing Subscription Key,需要在azure port中申请试用bing search
+# 具体申请方式请见
+# https://learn.microsoft.com/en-us/bing/search-apis/bing-web-search/create-bing-search-service-resource
+# 使用python创建bing api 搜索实例详见:
+# https://learn.microsoft.com/en-us/bing/search-apis/bing-web-search/quickstarts/rest/python
+BING_SEARCH_URL = "https://api.bing.microsoft.com/v7.0/search"
+# 注意不是bing Webmaster Tools的api key，
+
+# 此外，如果是在服务器上，报Failed to establish a new connection: [Errno 110] Connection timed out
+# 是因为服务器加了防火墙，需要联系管理员加白名单，如果公司的服务器的话，就别想了GG
+BING_SUBSCRIPTION_KEY = ""
+
+# 是否开启中文标题加强，以及标题增强的相关配置
+# 通过增加标题判断，判断哪些文本为标题，并在metadata中进行标记；
+# 然后将文本与往上一级的标题进行拼合，实现文本信息的增强。
+ZH_TITLE_ENHANCE = False
+
+
+# 通常情况下不需要更改以下内容
+
+# 知识库默认存储路径
+KB_ROOT_PATH = os.path.join(os.path.dirname(os.path.dirname(__file__)), "knowledge_base")
+if not os.path.exists(KB_ROOT_PATH):
+    os.mkdir(KB_ROOT_PATH)
+
+# 数据库默认存储路径。
+# 如果使用sqlite，可以直接修改DB_ROOT_PATH；如果使用其它数据库，请直接修改SQLALCHEMY_DATABASE_URI。
+DB_ROOT_PATH = os.path.join(KB_ROOT_PATH, "info.db")
+SQLALCHEMY_DATABASE_URI = f"sqlite:///{DB_ROOT_PATH}"
+
+# 可选向量库类型及对应配置
+kbs_config = {
+    "faiss": {
+    },
+    "milvus": {
+        "host": "127.0.0.1",
+        "port": "19530",
+        "user": "",
+        "password": "",
+        "secure": False,
+    },
+    "pg": {
+        "connection_uri": "postgresql://postgres:postgres@127.0.0.1:5432/langchain_chatchat",
+    }
+}
+
+# TextSplitter配置项，如果你不明白其中的含义，就不要修改。
+text_splitter_dict = {
+    "ChineseRecursiveTextSplitter": {
+        "source": "huggingface",  ## 选择tiktoken则使用openai的方法
+        "tokenizer_name_or_path": "gpt2",
+    },
+    "SpacyTextSplitter": {
+        "source": "huggingface",
+        "tokenizer_name_or_path": "",
+    },
+    "RecursiveCharacterTextSplitter": {
+        "source": "tiktoken",
+        "tokenizer_name_or_path": "cl100k_base",
+    },
+    "MarkdownHeaderTextSplitter": {
+        "headers_to_split_on":
+            [
+                ("#", "head1"),
+                ("##", "head2"),
+                ("###", "head3"),
+                ("####", "head4"),
+            ]
+    },
+}
+
+# TEXT_SPLITTER 名称
+TEXT_SPLITTER_NAME = "ChineseRecursiveTextSplitter"
diff --git a/img/LLM_success.png b/img/LLM_success.png
new file mode 100644
index 0000000..48bd274
Binary files /dev/null and b/img/LLM_success.png differ
diff --git a/img/init_knowledge_base.jpg b/img/init_knowledge_base.jpg
new file mode 100644
index 0000000..a031b77
Binary files /dev/null and b/img/init_knowledge_base.jpg differ
diff --git a/img/knowledge_base_success.jpg b/img/knowledge_base_success.jpg
new file mode 100644
index 0000000..6639ee9
Binary files /dev/null and b/img/knowledge_base_success.jpg differ
diff --git a/img/webui_0915_0.png b/img/webui_0915_0.png
deleted file mode 100644
index 058d7b1..0000000
Binary files a/img/webui_0915_0.png and /dev/null differ
diff --git a/img/webui_0915_1.png b/img/webui_0915_1.png
deleted file mode 100644
index 8df1eca..0000000
Binary files a/img/webui_0915_1.png and /dev/null differ
diff --git a/requirements.txt b/requirements.txt
index c4e9bbd..68385b7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
-langchain>=0.0.302
-fschat[model_worker]==0.2.30
+langchain>=0.0.310
+fschat[model_worker]>=0.2.30
 openai
 sentence_transformers
 transformers>=4.34
@@ -17,8 +17,8 @@ SQLAlchemy==2.0.19
 faiss-cpu
 accelerate
 spacy
-PyMuPDF==1.22.5
-rapidocr_onnxruntime>=1.3.2
+PyMuPDF
+rapidocr_onnxruntime
 
 requests
 pathlib
diff --git a/requirements_api.txt b/requirements_api.txt
index 8ecb492..b5428dd 100644
--- a/requirements_api.txt
+++ b/requirements_api.txt
@@ -1,7 +1,7 @@
-langchain>=0.0.302
+langchain>=0.0.310
 fschat[model_worker]>=0.2.30
 openai
-sentence_transformers
+sentence_transformers>=2.2.2
 transformers>=4.34
 torch>=2.0.1
 torchvision