diff --git a/GoogleTranslator.py b/GoogleTranslator.py
index a2c4fc6..b4f8822 100644
--- a/GoogleTranslator.py
+++ b/GoogleTranslator.py
@@ -60,10 +60,3 @@ class GoogleTranslator():
         data = eval(data[0][2])
         return data[1][0][0][5][0][0]
 
-translator = GoogleTranslator("en", 'zh_TW')
-
-n = ""
-while n!="!exit":
-    n = input("English: ")
-    if n!="" or n!="!exit":
-        print(translator.translate(n))
\ No newline at end of file
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..2679d8c
--- /dev/null
+++ b/main.py
@@ -0,0 +1,4 @@
+from tui import TranslatorApp
+
+app = TranslatorApp()
+app.run()
\ No newline at end of file
diff --git a/tui.py b/tui.py
index 9b4c127..3e644a1 100644
--- a/tui.py
+++ b/tui.py
@@ -1,30 +1,66 @@
 import npyscreen
 import curses
+from GoogleTranslator import GoogleTranslator
 
-class MyTestApp(npyscreen.NPSAppManaged):
+class TranslatorApp(npyscreen.NPSAppManaged):
     def onStart(self):
+        npyscreen.setTheme(npyscreen.Themes.ColorfulTheme)
         self.addForm("MAIN", MainForm, name="Google Translator - TUI")
 
-class TestBox(npyscreen.BoxTitle):
-    _contained_widget = npyscreen.Textfield
+class Box(npyscreen.BoxTitle):
+    _contained_widget = npyscreen.MultiLineEdit
 
 class MainForm(npyscreen.FormBaseNew):
     def create(self):
+        # set translator
+        self.translator = GoogleTranslator('en', "zh_TW")
+
         # set event handler
         event_handlers = {
-            # ALT + ENTER -> send request
-            curses.ascii.alt(curses.ascii.NL): self.send_text
+            # send request
+            curses.ascii.alt(curses.ascii.NL): self.send_text,
+            
+            #exit
+            "^Q": self.exit_app,
+
+            # delete all input
+            "^D": self.remove_text,
         }
         self.add_handlers(event_handlers)
 
         # get terminal's size
         y, x = self.useable_space()
 
-        self.input = self.add(TestBox, name="Input (from)", footer="Footer", 
-            max_width=x//2-3, max_height=y-5, relx=3, rely=3, value="{} {}".format(x, y))
+        self.input = self.add(Box, name="Input (from)", footer=self.translator.fr, 
+            max_width=x//2-5, max_height=y//3,
+            relx=3, rely=3,
+            value="Hello world"
+        )
         
-        self.output = self.add(TestBox, name="Output (to)", footer="Footer",
-            max_width=x//2-3, max_height=y-5, relx=x//2+1, rely=3, editable=False)
+        self.output = self.add(Box, name="Output (to)", footer=self.translator.to,
+            max_width=x//2-5, max_height=y//3,
+            relx=x//2+2, rely=3,
+            value="你好，世界", editable=False
+        )
+
+        self.readme = self.add(Box, name="README",
+            max_width=x-5, max_height=y//3*2-6,
+            relx=3, rely=y//3+4,
+            value='''
+        █▀▀ █▀█ █▀█ █▀▀ █░░ █▀▀ ▄▄ ▀█▀ █▀█ ▄▀█ █▄░█ █▀ █░░ ▄▀█ ▀█▀ █▀▀   ▀█▀ █░█ █
+        █▄█ █▄█ █▄█ █▄█ █▄▄ ██▄ ░░ ░█░ █▀▄ █▀█ █░▀█ ▄█ █▄▄ █▀█ ░█░ ██▄   ░█░ █▄█ █
+        
+        This is an unofficial Google Translate client.
+        It use Google Translate's API(free), so it may not work when you send too many requests.
+
+        It just a practice for npyscreen, this respository may not update any more.
+
+        -    ^Q           :         quit
+        -    ALT + ENTER  :         search
+        -    CTRL + D     :         delete all input
+            ''',
+            editable=False
+        )
     
     def resize(self):
         '''
@@ -35,25 +71,46 @@ class MainForm(npyscreen.FormBaseNew):
         y, x = self.useable_space()
 
         # change input's size
-        self.input.max_width = x//2-3
-        self.input.max_height = y//2
+        self.input.max_width = x//2-5
+        self.input.max_height = y//3
 
         # change output's size & location
-        self.output.max_width = x//2-3
-        self.output.max_height = y//2
-        self.output.relx = x//2+1  # location(x)
+        self.output.max_width = x//2-5
+        self.output.max_height = y//3
 
-        # Output's contained widget, TextField must be move to a new position
-        self.output.entry_widget.relx = x//2+2
+        self.output.relx = x//2+2  # location(x)
+
+        # change README's size & location
+        self.readme.max_width = x-5
+        self.readme.max_height = y//3*2-6
+        self.readme.rely = y//3+4
+
+        # Output and README's contained widget, TextField must be move to a new position
+        self.output.entry_widget.relx = x//2+3
+        self.readme.entry_widget.rely = y//3+5
     
     def send_text(self, event):
+        '''
+            use self.translator to send the request to Google Translate
+            then update the response to self.output
+        '''
         # When press ALT + ENTER, send request & update output's text
-        self.output.entry_widget.value = self.input.value
-        self.output.entry_widget.display()
+        if self.input.value != "":
+            try:
+                targetText = self.translator.translate(self.input.value)
+            except:
+                targetText = "This is not a true translation, there exist an error."
+            finally:
+                self.output.value = targetText
 
-def main():
-    TA = MyTestApp()
-    TA.run()
+                # refresh entire form
+                # Though npyscreen's documentation mention that we should avoid using DISPLAY() function
+                # I can't display Chinese or Japanese,etc correctly when I didn't use this function.
+                self.DISPLAY()
+    
+    def remove_text(self, event):
+        self.input.value = ""
+        self.input.update()
 
-if __name__ == '__main__':
-    main()
+    def exit_app(self, event):
+        exit(0)
\ No newline at end of file