diff --git a/content/Building Systems with the ChatGPT API/1.Introduction.md b/content/Building Systems with the ChatGPT API/1.Introduction.md
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--- a/content/Building Systems with the ChatGPT API/1.Introduction.md	
+++ b/content/Building Systems with the ChatGPT API/1.Introduction.md	
@@ -1,10 +1,10 @@
-## 吴恩达 用ChatGPT API构建系统 开端篇
+# 用 ChatGPT API 搭建系统
 
-## Building Systems with the ChatGPT API
+## 简介
 
-欢迎来到LangChain大模型应用开发短期课程👏🏻👏🏻
+欢迎来到课程《使用 ChatGPT API 搭建系统》👏🏻👏🏻
 
-本课程由哈里森·蔡斯 (Harrison Chase，LangChain作者）与与Deeplearning.ai合作开发，旨在教大家使用这个神奇工具。
+本课程由吴恩达老师联合 OpenAI 开发，旨在指导开发者如何基于 ChatGPT 搭建完整的智能问答系统。
 
 ### 📚 课程基本内容
 
@@ -15,7 +15,6 @@
 本课程将围绕该主题，逐步了解应用程序内部的构建步骤，以及长期视角下系统评估和持续改进的最佳实践。
 
 
-
 ### 🌹致谢课程重要贡献者
 
 感谢来自OpenAI团队的Andrew Kondrick、Joe Palermo、Boris Power和Ted Sanders，
diff --git a/content/LangChain for LLM Application Development/4. 文档问答.ipynb b/content/LangChain for LLM Application Development/5.文档问答.ipynb
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diff --git a/content/LangChain for LLM Application Development/5. 评估.ipynb b/content/LangChain for LLM Application Development/6.评估.ipynb
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