Can I go to Korea after returning to China with a c38 tourist visa?

The C38 visa is valid for multiple visas for 5 years (90 days at a time). As long as your visa has not expired, your passport will be valid for at least 6 months after your next trip (that is, if you want to stay for 90 days, your passport will be valid for at least 9 months). Passport has at least 2 blank visa pages, excluding remarks pages; Then you can go to Korea again.