Is it one of the languages in Gboard(Google Keyboard) or is it Google Pinyin Input? Which is a separate keyboard app and is specifically intended for typing Chinese, this:
https://play.google.com/store/apps/details?id=com.google.android.inputmethod.pinyin&hl=en_US
What make and model is the phone, like ZTE or OnePlus or something?
FWIW I've got a UK version Samsung S7 that was purchased from Vodafone, and that didn't come with any Google Pinyin at all. I've also got a China version Huawei Mate 10, and that came with Huawei IME keyboard, that was made by Baidu, rather than Google Pinyin.