https://blog.wongcw.com/2022/05/25/%e5%a5%87%e7%89%b9%e7%9a%84goodwill%e5%8b%92%e7%b4%a2%e8%bb%9f%e4%bb%b6%ef%bc%9a%e8%a6%81%e5%81%9a%e4%b8%89%e4%bb%b6%e5%96%84%e4%ba%8b%e6%89%8d%e8%83%bd%e8%a7%a3%e9%8e%96%e4%bd%a0%e7%9a%84%e6%95%b8/