diff --git a/README.md b/README.md
index cc91375..6e6477b 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,35 @@
 # Proxmark3GUI
 A GUI for [Proxmark3](https://github.com/Proxmark/proxmark3) client
 
+[中文](README/README.zh_CN.md)
+
+***
+
+## Features
+
++ Support raw commands of Proxmark3 client
++ Have a friendly UI to test Mifare cards
++ Easy to edit Mifare data files
++ Support binary(.bin .dump) files and text(.eml) files
++ ...
+
+***
+
+## Previews
+![nested_attack](README/mf_nested_attack.gif)  
+
+![mf_load_file](README/mf_load_file.gif)  
+
+![mf_edit_file](README/mf_edit_file.gif)  
+
+![raw_command](README/raw_command.gif)  
+
 ***
 
-Update Log:
+## Update Log:
+
+### V0.1
++ Able to deal with Mifare card and related files
 
-## V0.0.1
+### V0.0.1
 + a dumb version with a useless GUI and a serial choose box.
\ No newline at end of file
diff --git a/README/README.zh_CN.md b/README/README.zh_CN.md
new file mode 100644
index 0000000..9e18da8
--- /dev/null
+++ b/README/README.zh_CN.md
@@ -0,0 +1,35 @@
+# Proxmark3GUI
+一个自制的[Proxmark3](https://github.com/Proxmark/proxmark3) GUI
+
+[English](../README.md)
+
+***
+
+## 特色功能
+
++ 支持直接输入PM3命令
++ 有针对于Mifare卡（IC卡）的图形界面
++ 支持编辑Mifare扇区数据文件
++ 可以打开二进制/文本格式的扇区数据文件
++ ...
+
+***
+
+## 预览图
+![nested_attack](mf_nested_attack.gif)  
+
+![mf_load_file](mf_load_file.gif)  
+
+![mf_edit_file](mf_edit_file.gif)  
+
+![raw_command](raw_command.gif)  
+
+***
+
+## 更新日志:
+
+### V0.1
++ 支持处理Mifare卡片及相关数据文件
+
+### V0.0.1
++ 一个带串口选择框的实验版本
\ No newline at end of file
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diff --git a/README/mf_nested_attack.gif b/README/mf_nested_attack.gif
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diff --git a/README/raw_command.gif b/README/raw_command.gif
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diff --git a/ui/mainwindow.cpp b/ui/mainwindow.cpp
index 042c840..600aec1 100644
--- a/ui/mainwindow.cpp
+++ b/ui/mainwindow.cpp
@@ -219,7 +219,7 @@ void MainWindow::on_MF_dataWidget_itemChanged(QTableWidgetItem *item)
 
     if(item->column() == 2)
     {
-        QString data = item->text().replace(" ", "");
+        QString data = item->text().replace(" ", "").toUpper();
         if(data == "" || mifare->data_isDataValid(data) == Mifare::DATA_NOSPACE)
         {
             mifare->data_setData(item->row(), data);
@@ -236,7 +236,7 @@ void MainWindow::on_MF_keyWidget_itemChanged(QTableWidgetItem *item)
 {
     if(item->column() == 1)
     {
-        QString key = item->text().replace(" ", "");
+        QString key = item->text().replace(" ", "").toUpper();
         if(key == "" || mifare->data_isKeyValid(key))
         {
             mifare->data_setKey(item->row(), true, key);