https://blog.wongcw.com/2021/03/03/avatarify%e7%88%86%e7%81%ab%e4%b8%8d%e5%88%b07%e5%a4%a9%e4%b8%8b%e6%9e%b6%e6%8a%96%e9%9f%b3%e6%8e%a5%e6%a3%92%e8%9e%9e%e8%9f%bb%e7%89%99%e9%bb%91%e5%88%b7%e5%b1%8f%e7%89%b9%e6%95%88/