https://blog.wongcw.com/2021/10/28/%e6%a0%bc%e7%be%85%e6%96%b9%e5%be%b7%e9%a0%90%e8%a8%88%e7%95%b6%e5%9c%b0%e6%99%82%e9%96%93%e9%80%b1%e5%9b%9b%e5%95%9f%e5%8b%95ipo-%e7%99%bc%e8%a1%8c%e5%83%b9%e5%8f%af%e8%83%bd%e7%82%ba47%e7%be%8e/