https://www.zhihu.com/question/21083751?utm_campaign=rss&utm_medium=rss&utm_source=rss&utm_content=title
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https://www.zhihu.com/question/21083751?utm_campaign=rss&utm_medium=rss&utm_source=rss&utm_content=title
This article on Zhihu is more suitable for me.