How to change Chinese into English in IOS devices?

Happy Chick Emulator APP is auto change the Language according to your phone’s system language. If your phone’s language is not English, then it is Chinese.
Happy Chick Emulator only support Chinese & English right now. ):
So need to change your phone’s language into English, then the App’s language will auto change into English. 

Go to your phone’s: Settings---General----Language & Region----Iphone Language---English.