After getting permanent residency in Korea, I have to go back and postpone it for several years.

Hello. I am Korean, 20 years old, and I am also a permanent F5 visa, invited by my parents.

I have been away from my usual place for half a year. I asked someone in the legal department before. They said it was two years. Return to China after obtaining permanent residency in Korea. You can go to Korea once every two years in China. Even if it is a one-day stay, the right to stay forever doesn't matter. If it is more than 2 years, it is the same as QQ number. If you haven't used QQ for a long time, you must activate it, which is why it is not good for you to exceed the time. More troublesome.

1 Don't look at what you don't know. I asked someone in the legal department myself. Go to Korea every two years. You can stay as long as you want.