What procedures do China people with green cards need to go through when they return to China?

You don't have to do anything, just buy a plane ticket with your passport and go back to China.

1, who holds a green card or China nationality, is treated as a citizen of China.

2. China citizens do not need to go through any formalities to return to China. They just need to buy a plane ticket to return home.

If an immigrant has acquired the nationality of another country, he needs to apply for a Chinese visa to return to China.

4. A green card is not equal to nationality, but only permanent residency in other countries. China does not recognize dual nationality, and foreigners naturalized in other countries naturally have to apply for a Chinese visa.