diff --git a/README.en.md b/README.en.md
new file mode 100644
index 0000000..f252675
--- /dev/null
+++ b/README.en.md
@@ -0,0 +1,46 @@
+# ShortLink
+
+The code is based on secondary development of [CRZ.im](https://github.com/Caringor/CRZ.im), thanks for the hard work of the original author @Caringor!
+
+## Language
+- zh_CN [简体中文](README.md)
+- en [English](README.en.md)
+
+## Overview
+
+A web URL shortener source code.
+
+## Installation
+
+### Environment
+
++ Compatible with `PHP 7.x`
++ `Nginx 1.15+`
++ ~~`MySQL 5.5+`~~ (Not required for current version)
+
+Suggestion: Please install it on a SSD server if the website will be heavily used.
+
+### Configuration
+
+Modify the settings in `config.php` and change the permissions of the folder `inc` to `755`.
+
+### URL rewrite rules
+
+#### For Apache
+
+Just directly use the file `.htaccess`.
+
+#### For Nginx
+
+Add the content of `nginx-rewrite.conf` to the `Nginx` server block being used.
+
+## Features
+
++ URL shortener
++ Concise page
++ One-click copy
+
+## Todo List
+
++ Add the support of `MySQL`
++ More...
diff --git a/README.md b/README.md
index 57e204e..1b85282 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,10 @@
 
 代码基于 [CRZ.im](https://github.com/Caringor/CRZ.im) 二次开发，感谢原作者的辛勤劳动。
 
+## 文档语言
+- zh_CN [简体中文](README.md)
+- en [English](README.en.md)
+
 ## 概述
 
 这是一个网址缩短服务的网站的源代码。
@@ -10,7 +14,7 @@
 
 ### 环境准备
 
-+ `PHP 7.0+`
++ `PHP 7.0x`版本兼容
 + `Nginx 1.15+`
 + ~~`MySQL 5.5+`~~ （目前还不需要）
 
@@ -28,7 +32,7 @@
 
 #### Nginx 用户
 
-需要把 `nginx-rewrite.conf` 里面的内容添加到 `Nginx` 的配置文件里。
+需要把 `nginx-rewrite.conf` 里面的内容添加到 `Nginx` 对欲使用网站的配置文件里。
 
 ## 功能
 
diff --git a/inc/class/database.db b/inc/class/database.db
old mode 100644
new mode 100755
index 6a3fd8b..ade5ce2
Binary files a/inc/class/database.db and b/inc/class/database.db differ
diff --git a/index.php b/index.php
index 56d96ec..f07ba2a 100644
--- a/index.php
+++ b/index.php
@@ -50,7 +50,7 @@
 	    </div>
 		<!--嵌入 JS 代码-->
 		<script>
-			document.body.oncopy = function() {
+			shorturl.oncopy = function() {
 				Swal.fire({
 					allowOutsideClick:false,
 					type:'success',
@@ -65,4 +65,4 @@
 		<script src="https://cdn.jsdelivr.net/npm/sweetalert2@8"></script>
 	</body>
 	
-</html>
\ No newline at end of file
+</html>