https://blog.wongcw.com/2020/06/26/%e8%96%85%e7%be%8a%e6%af%9b%e7%84%a1%e5%ba%95%e7%b7%9a%e4%bd%86%e6%9c%89%e5%b0%8d%e6%89%8b/
薅羊毛無底線但有對手