https://blog.wongcw.com/2020/09/25/%e4%b8%ad%e5%9c%8b%e7%a4%be%e4%bf%9d%e5%9f%ba%e9%87%91%e5%b0%87%e5%8f%83%e8%88%87%e8%9e%9e%e8%9f%bb%e9%9b%86%e5%9c%98ipo-%e6%88%90%e7%82%ba%e5%9f%ba%e7%9f%b3%e6%8a%95%e8%b3%87%e8%80%85/