Under what circumstances is immigration not allowed in China?

People who have a criminal history and want to get away with it are definitely not allowed to immigrate in China. China has no right to interfere with whether a citizen immigrates, as long as he meets the requirements and has the funds to immigrate. Everyone has the freedom to choose, but if he emigrates to other countries and chooses naturalization, it may be that the country doesn't want you. Wynn immigrants. . .