diff --git a/README.md b/README.md
index 93d0445ce..2d31c9388 100644
--- a/README.md
+++ b/README.md
@@ -32,15 +32,17 @@ The high-level architecture and main process flow is as follows:
 
 <img src="./docs/images/supersonic_components.png" height="65%" width="65%" align="center"/> 
 
-- **Schema Mapper:** identifies references to schema elements(metrics/dimensions/entities/values) in user queries. It matches the query text against a knowledge base constructed from the semantic models.
+- **Knowledge Base:** extracts schema information periodically from the semantic models and build dictionary and index to facilitate schema mapping.
 
-- **Semantic Parser:** understands user queries and extract semantic information. It consists of a combination of rule-based and model-based parsers, each of which deals with specific scenarios.
+- **Schema Mapper:** identifies references to schema elements(metrics/dimensions/entities/values) in user queries. It matches the query text against the knowledge base.
+
+- **Semantic Parser:** understands user queries and extracts semantic information. It consists of a combination of rule-based and model-based parsers, each of which deals with specific scenarios.
 
 - **Semantic Corrector:** checks validity of extracted semantic information and performs correction and optimization if needed.
 
 - **Semantic Layer:** performs execution according to extracted semantic information. It generates SQL queries and executes them against physical data models.
 
-- **Chat Plugin:** extends functionality with third-party tools. Given all configured plugins with function description and sample questions, the LLM is going to select the most suitable one.  
+- **Chat Plugin:** extends functionality with third-party tools. The LLM is going to select the most suitable one, given all configured plugins with function description and sample questions.
 
 ## Quick Demo
 
@@ -61,3 +63,9 @@ Pull the source code and run script "assembly/bin/build-standalone.sh" to build
 ### Build for Distributed Mode 
 
 Pull the source code and run scripts "assembly/bin/build-chat.sh" and "assembly/bin/build-semantic.sh" separately to build packages.
+
+## WeChat Contact
+
+Please join the chat group to suggest feedbacks or ideas:
+
+<img src="./docs/images/wechat_contact.jpeg" height="30%" width="30%" align="center"/> 
\ No newline at end of file
diff --git a/README_CN.md b/README_CN.md
index e4e0b60e1..eaf754888 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -30,7 +30,9 @@
 
 <img src="./docs/images/supersonic_components.png" height="65%" width="65%" align="center"/> 
 
-- **模式映射器(Schema Mapper)：** 基于语义模型构建知识库，然后将自然语言文本在知识库中进行匹配，为后续的语义解析提供相关信息。
+- **知识库(Knowledge Base)：** 定期从语义模型中提取相关的模式信息，构建词典和索引，以便后续的模式映射。
+
+- **模式映射器(Schema Mapper)：** 将自然语言文本在知识库中进行匹配，为后续的语义解析提供相关信息。
 
 - **语义解析器(Semantic Parser)：** 理解用户查询并抽取语义信息，其由一组基于规则和基于模型的解析器组成，每个解析器可应对不同的特定场景。
 
@@ -59,3 +61,9 @@
 ### Distributed模式构建
 
 下载源码包，分别运行脚本"assembly/bin/build-chat.sh"、"assembly/bin/build-semantic.sh"，为问答层服务和语义层服务编译打包
+
+## 微信联系方式
+
+欢迎加入微信群反馈建议：
+
+<img src="./docs/images/wechat_contact.jpeg" height="30%" width="30%" align="center"/> 
\ No newline at end of file
diff --git a/docs/images/supersonic_components.png b/docs/images/supersonic_components.png
index 4c237eb74..07ebe188d 100644
Binary files a/docs/images/supersonic_components.png and b/docs/images/supersonic_components.png differ
diff --git a/docs/images/wechat_contact.jpeg b/docs/images/wechat_contact.jpeg
new file mode 100644
index 000000000..1d913ecc0
Binary files /dev/null and b/docs/images/wechat_contact.jpeg differ