The Korean visa is about to expire. Can I go to Korea?

The Korean visa is about to expire, and I can still go to Korea. As the visa is about to expire, you can apply for visa extension, but the time for applying for extension is limited, and you need to apply about 15 days before the visa expires. To apply for extension, you need to provide proof materials and application forms, and the fee is extra. If the visa has expired, you need to apply for a new visa.