https://blog.wongcw.com/2022/05/15/%e4%b9%98%e5%ae%a2%e7%94%a8airdrop%e6%83%a1%e6%84%8f%e7%99%bc%e9%80%81%e4%b8%8d%e5%90%89%e5%9c%96%e7%89%87%e5%bc%95%e7%99%bc%e8%88%aa%e7%8f%ad%e5%81%9c%e9%a3%9b/