Which is better, immigration, green card or naturalization?

This is a process, or it can be simply understood as having a green card before having a nationality. Immigration is a dynamic, while green card is a state.

Immigrants, or successful immigrants, do not immediately have foreign nationality. But only the legal right to live and work permanently in this country. That is to say, at this time, this person has the right of permanent residence in this country, and you are still a citizen of China with a China passport. In this case, this person is what we usually call "overseas Chinese"-China people living abroad.

With foreign permanent residency, this country will issue an identity certificate to this person, just like our domestic identity card, to prove this person's permanent residency. This certificate is commonly known as "green card" in the United States, and other countries also have different names, such as "maple leaf card" in Canada and "login card" in Japan.

Successful immigration means that you have permanent residency in a foreign country, become a permanent resident of this country, and can live permanently and legally abroad, that is, a green card. After living abroad for a certain number of years, applying to become a citizen of this country according to the requirements of this country and being approved is naturalization, becoming a foreign citizen and possessing foreign nationality.