home.md

 [初步设计思路](./first_design)  
 [初步界面设计](https://www.processon.com/view/link/5a5ec609e4b0c0905247c8f7)  
-[数据结构定义](./data_structure)  
+[数据结构定义](./data_structure)  
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+[通信结构定义](./net_structure)  
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