https://blog.wongcw.com/2023/01/31/%e4%b8%80%e5%8a%a0%e5%b7%b2%e7%94%b3%e8%ab%8boneplus-v-fold-flip%e5%95%86%e6%a8%99%e9%a0%90%e7%a4%ba%e6%8a%98%e7%96%8a%e5%b1%8f%e6%89%8b%e6%a9%9f%e5%8d%b3%e5%b0%87%e5%88%b0%e4%be%86/