What's the difference between green card, PR, permanent residence and naturalization?

Immigration, green card and permanent residence actually mean the same thing. If you get permanent residency, you can immigrate to the host country, which is commonly known as the green card. Only after obtaining permanent residency can you become a citizen of the host country. If you become a foreigner, China does not recognize dual citizenship. With permanent residency, you are a citizen of China, but you can live in the host country for a long time and enjoy all the benefits of the host country. Experienced immigrants mainly depend on your professional skills and whether you can find a suitable job in the host country. Relatively speaking, the requirements will be higher, especially English ability.