First, through international marriage, that is, after three years of marriage with Koreans, you can apply for permanent residence.
Secondly, through investment immigration, the only areas where South Korea can conduct investment immigration are Jeju Island and Alpsia Resort in Pyeongchang County, gangwon.
You can apply for permanent residence by purchasing a certain number of properties in the above two places. As far as I know, quite a few immigration agencies in China are doing this business. You can consult them.
In addition, there is another way that after working in Korea for a period of time and having certain fixed property, you can apply for permanent residence at the entry and exit, and the residence qualification will be revised after a period of entry and exit review.
Extended data:
Korean permanent residence qualification
I. Applicant:
1, people who have lived in the Republic of Korea for more than five years, people who have lived, invested in enterprises, engaged in trade, taught, conducted dialogues, studied, provided technical guidance, engaged in professional occupations, engaged in specific activities or lived in Korea for more than five years.
According to the provisions of the Korean Civil Law, I am an adult, and I or my partner's family members have the ability to make a living, good conduct, basic qualities needed to stay in Korea, and sufficient conditions for personal residence qualification.
2. Spouses of Korean citizens or spouses and minor children of permanent residents.
When the spouse of a national who has the qualification of residence and residence and has stayed in China for more than 2 years has the following circumstances, when he continues to maintain a marriage relationship with a Korean, when the Korean spouse dies or has a court ruling that he is missing, when the person who divorced or separated from the Korean spouse can prove that the reason for the divorce or separation is a Korean spouse, and when the marriage relationship is interrupted, he must raise minor children born with the Korean spouse.
Baidu encyclopedia-Korea permanent residence