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 ## accessKeyId和accessKeySecret的获取
 参考帮助文档：[获取accessKeyId和accessKeySecret](https://help.fanruan.com/jiushuyun/doc-view-140.html)
 
+## 数据流转流程图
+
+![api_data_flow](/screenshots/api_data_flow.png)
+
 ## 调用示例代码
 
 ```Authentication```表示的是传入accessKeyId和accessKeySecret参数，获取临时令牌的操作，可以自行调用其中的RestApi，不是必须使用该类。
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