Regarding Korean sponsors/guarantors, the student has to take care of that part personally. If it is not possible for you to find a guarantor, you can come through agencies that help study abroad. In that case, please send us the certificate of business licence with the documents. Another possible way is to come into Korea with a C-3 visa and change it to another type of visa. In Korea, you can change your C-3 visa to a student visa if you have a certificate of bank balance. However, in the case of Chinese students, you must have a sponsor/guarantor.