https://blog.wongcw.com/2020/03/19/%e6%96%b0%e6%ac%beipad-pro%e5%85%a9%e8%99%95%e7%b4%b0%e7%af%80%e8%aa%bf%e6%95%b4%ef%bc%9a%e6%94%af%e6%8c%81wi-fi-6-%e5%a6%99%e6%8e%a7%e9%8d%b5%e7%9b%a4%e8%98%8b%e6%9e%9c%e5%9c%96%e6%a8%99%e6%b0%b4/