https://blog.wongcw.com/2019/11/23/%e7%9f%a5%e5%90%8dandroid-root%e7%a5%9e%e5%99%a8%e5%81%9c%e6%ad%a2%e7%87%9f%e6%a5%ad%ef%bc%9a%e6%99%82%e8%87%b3%e4%bb%8a%e6%97%a5%e4%bd%a0%e9%82%84root%e5%97%8e/