https://blog.wongcw.com/2023/01/11/%e5%be%ae%e8%bb%9f%e5%ae%a3%e5%b8%83%e6%94%b6%e8%b3%bcfungible-%e4%bb%a5%e5%a2%9e%e5%bc%b7%e5%85%b6%e6%95%b8%e6%93%9a%e4%b8%ad%e5%bf%83%e5%9f%ba%e7%a4%8e%e8%a8%ad%e6%96%bd/