https://blog.wongcw.com/2018/11/26/bitmain%e5%9b%a0%e6%b6%89%e5%ab%8c%e5%88%a9%e7%94%a8%e5%88%9d%e5%a7%8b%e5%8c%96%e6%9c%9f%e9%96%93%e7%9a%84%e5%ae%a2%e6%88%b6%e8%a8%ad%e5%82%99%e6%8c%96%e7%a4%a6%e8%80%8c%e8%a2%ab/