If Japanese immigrate to China in large numbers, will you welcome them?

First of all, as far as China's population base is concerned, the possibility of introducing a large number of immigrants is almost zero; Secondly, if the immigration policy is open, Japan belongs to Asian countries, and the bloodline of immigrants will not change much. At present, countries are at peace and there is no fear of aggression. It doesn't matter if you don't welcome me, after all, there are still many people in China!