Is immigration treason?

Immigrants just have one more identity. Many people think that immigration means becoming a foreigner and taking up foreign nationality. This idea is wrong. "Immigration" and "naturalization" are two different things. Different countries have different immigration policies. Take Canada, America and Australia as examples. We applied for the relevant immigration program, and after being approved, it means that we have obtained the "permanent residency" in that country, which is what we often call green card, maple leaf card and Australia PR. This means that we can live and live in the local area, our children can go to school in the local area (free of charge), and we can enjoy the same welfare treatment as local residents, but we are still China citizens, with China passports and China people.