If they live in china they should learn mandarin.
“They have no culture and they don’t try to study and improve themselves,” said a Chinese delivery driver who would only give his surname, Wang, because he said the government didn’t want him to speak ill of the Uighurs. “Most businesses don’t want to hire them. That’s why they hire Han Chinese. Their religion, Islam, it’s no good. It fills their heads with nonsense.”
Sounds exactly like the situation we are in...