diff --git a/README.md b/README.md
index 2a2a625..adf8297 100644
--- a/README.md
+++ b/README.md
@@ -1,12 +1,10 @@
 [![My Skills](https://skillicons.dev/icons?i=nextjs,tailwind,react,python,flask)](https://skillicons.dev)<a href="https://www.buymeacoffee.com/iguangzhengli" target="_blank"><img src="https://www.buymeacoffee.com/assets/img/custom_images/orange_img.png" alt="Buy Me A Coffee" style="height: 41px !important;width: 174px !important;box-shadow: 0px 3px 2px 0px rgba(190, 190, 190, 0.5) !important;-webkit-box-shadow: 0px 3px 2px 0px rgba(190, 190, 190, 0.5) !important;" ></a>
 
-> ⚠️⚠️⚠️ Warning: Please understand that the https://chatfiles-ui.fly.dev web demo is temporarily unavailable as used up all the credits available in my free trial. and I am unable to recharge. If necessary, please run it locally yourself. Thanks.
-
 # ChatFiles
 
 EN | [中文文档](README.zh.md)
 
-> this repository use [jerryjliu/llama_index](https://github.com/jerryjliu/llama_index), based on [mckaywrigley/chatbot-ui](https://github.com/mckaywrigley/chatbot-ui), inspired by [madawei2699/myGPTReader](https://github.com/madawei2699/myGPTReader)
+> this repository use [hwchase17/langchainjs](https://github.com/hwchase17/langchainjs), based on [mckaywrigley/chatbot-ui](https://github.com/mckaywrigley/chatbot-ui)
 
 ![Chatfiles](./doc/chatfiles.png)
 
@@ -15,8 +13,6 @@ EN | [中文文档](README.zh.md)
 
 ## How to use it
 
-Open https://chatfiles-ui.fly.dev and chat with [Good Example](./doc/Example.md)
-
 ### How to run locally without limited
 1. clone this repository.
 2. create a .env file on root path.
@@ -40,28 +36,11 @@ open browser with http://localhost:3000
 ### chatfiles-ui
 
 ```shell
-cd chatfiles-ui
 npm install
 npm run dev
 ```
 
-### chatfiles
-```shell
-cd chatfiles
-```
-
-create a file named .env with value(OPENAI_API_KEY=your token)
-
-```shell
-python3 server.py
-```
-
-### how to deploy flyio
-- [Deploy to fly.io](./doc/deploy-flyio.md)
-
-
 ## Feature
 
 - [x] Chat with GPT-3.5
-- [x] Chat with file by llama_index
-- [x] Upload multiple files to one index, chat with multiple files.
\ No newline at end of file
+- [x] Chat with file by langchainjs
\ No newline at end of file
diff --git a/README.zh.md b/README.zh.md
index 0563b84..3c47042 100644
--- a/README.zh.md
+++ b/README.zh.md
@@ -1,13 +1,9 @@
 [![My Skills](https://skillicons.dev/icons?i=nextjs,tailwind,react,python,flask)](https://skillicons.dev)<a href="https://www.buymeacoffee.com/iguangzhengli" target="_blank"><img src="https://www.buymeacoffee.com/assets/img/custom_images/orange_img.png" alt="Buy Me A Coffee" style="height: 41px !important;width: 174px !important;box-shadow: 0px 3px 2px 0px rgba(190, 190, 190, 0.5) !important;-webkit-box-shadow: 0px 3px 2px 0px rgba(190, 190, 190, 0.5) !important;" ></a>
 
-> ⚠️⚠️⚠️警告：由于我的 Openai key 额度已用完，并且我无法充值，网页 demo 暂时无法服务。如果有需要，请自行在本地运行。感谢。
-
 # ChatFiles
 **上传文件然后与之对话.**
 
 ## 如何使用
-
-浏览器打开：https://chatfiles-ui.fly.dev 。
 上传文件对话，可以看看这些好的例子: [Good Example](./doc/Example.md)
 
 ### 如何无限制的本地运行
@@ -30,28 +26,13 @@ docker compose up
 直接发送消息，而无需上传文件。
 
 ## 如何本地运行
-### chatfiles-ui
+### chatfiles
 
 ```shell
-cd chatfiles-ui
 npm install
 npm run dev
 ```
 
-### chatfiles
-```shell
-cd chatfiles
-```
-
-创建一个名为 .env的文件，里面设置值为(OPENAI_API_KEY=your token)
-
-```shell
-python3 server.py
-```
-
-## 如何部署到 fly.io
-- [Deploy to fly.io](./doc/deploy-flyio.md)
-
 ## 功能
 
 - [x] 与 GPT-3.5 对话。