What's the difference between immigration and naturalization?

Legal analysis: Different nationalities include holding a green card and naturalization. To talk about the connection between the two, most countries must first hold a green card and then stay in their own territory for a certain period of time before applying for naturalization. Obtaining permanent residency (green card) is only the right to be allowed to enter and leave the country at any time. The holder's nationality has not changed, and he is still a citizen of China, just living abroad, or his identity has become an overseas Chinese (China nationality). If he immigrates to America, he is an overseas Chinese living in America.

Legal basis: Nationality Law of the People's Republic of China

Article 3 People's Republic of China (PRC) does not recognize dual citizenship of China citizens.

Article 4 One or both parents are citizens of China, and I was born in China and have China nationality.

Fifth parents or one of them is a citizen of China, I was born in a foreign country and have China nationality; However, if one or both parents are citizens of China and have settled in a foreign country, they will have foreign nationality at birth, but will not have China nationality.