https://blog.wongcw.com/2019/03/07/%e4%b8%8d%e5%86%8dpixel-3%e7%8d%a8%e5%8d%a0%e8%b0%b7%e6%ad%8c%e5%90%91%e4%b8%80%e5%8a%a06t%e5%92%8cs9%e9%96%8b%e6%94%besmart-compose%e5%8a%9f%e8%83%bd/