Mine was English but then suddenly becomes Chinese and can't find ways to switch back to English.
http://imgur.com/gallery/pOyEXxN
Installed my poco f1 app vault version from play store and disabled the china version and now is English version but most of the shortcuts widgets are missing. Can only put apps.
Maybe factory reset can solved but not now.
After restarting phone today, suddenly App Vault switched to Chinese, hahaha. Also no way to change it back.
Guess I'll switch to Poco Launcher 2.0, swipe left can set frequently used apps and more meaningful customizations for international users. Swipe up is app drawer with a good English search bar.