https://blog.wongcw.com/2021/11/22/oneplus-tri-fold-%e5%8f%af%e6%8a%98%e7%96%8a%e6%99%ba%e8%83%bd%e6%89%8b%e6%a9%9f%ef%bc%8c%e5%b8%b6%e5%b9%b3%e6%9d%bf%e9%9b%bb%e8%85%a6%e5%b1%8f%e5%b9%95/