Easy switching languages?
I found this app to be very easy to use and basically works with just two taps. It's called Change Lanuage and can be found officially from the play store. Then only setback is that you'll only be able to change languages based on languages installed on the phone. Which means if you don't have chinese dictionary and language pack on your phone you'll have to download it through the phone settings page first. Add the app widget to the home screen and you'll be able to change in less than 5 seconds.