What procedures do I need to go through to live in Korea for one or two years?

Don't imagine Korea to be too beautiful, it is not as good as China. If you want to go abroad, you must first pass the language barrier, which is necessary. Self-study is unscientific. Korean pronunciation is very important, so you must find a teacher to learn. Learning languages in Korea is very expensive, and it is generally not taught by regular teachers. Secondly, Korean homestays are easy to find, but the price will rise for several months when you check in, and the safety factor is not high. Koreans don't get very close to China people. Little sister, don't be fooled by Korean dramas. This is my experience in Korea for four years. I want you to think it over.