https://blog.wongcw.com/2021/02/02/robinhood%e5%9c%a8google-play%e7%9a%84%e8%a9%95%e7%b4%9a%e5%86%8d%e5%89%b5%e6%96%b0%e4%bd%8e%ef%bc%9a%e8%b7%8c%e8%87%b31%e6%98%9f/