Can parents apply for naturalization after China people become Korean nationals?

Of course. Parents who meet the requirements for applying for Korean nationality can apply for Korean nationality. Joining Korean nationality conditions and living in the Republic of Korea for more than 5 years; Majority under the civil law of the Republic of Korea; A person of good character; Have the ability to make a living with relatives according to their own property, skills or dependence; Have a certain understanding of Korean language ability and customs in Korea, and have the basic literacy as a Korean national; Adult foreigners who have never become nationals of the Republic of Korea after birth can apply for general naturalization if they have legally resided for more than five years.