diff --git a/Notebook-HengkuanZhang.md b/Notebook-HengkuanZhang.md
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@@ -1,2 +1,48 @@
 # Notebook
+
 ## Mission 1
+
+1.  Research and history function
+
+    In the GitLab interface (top right), a text entry field intialized with the text “Search or jump to ...” permits to search for a character string in all files of the current project.
+
+2.  How to use Markdown
+    
+    1.  Headers
+    
+        Using #, number of # represents the level of tag.
+ 
+    2.  Emphasis
+    
+        *This text will be italic*
+
+        _This will also be italic_
+        
+        **This text will be bold**
+        
+        __This will also be bold__
+        
+        _You **can** combine them_
+
+    3.  Bullet list
+    
+        Using -
+        
+    4.  Numbered list
+    
+        Using numbers like 1.  2.  
+        
+    5.  Hypertext link
+    
+        e.g. [CSC](https://www.csc.edu.cn/chuguo)
+    
+    6.  Code
+    
+        ```
+        Less is more.
+        ```
+        
+        
+        
+
+        
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