1. Two sets of real estate licenses in father's name (100 m2 or less)
2. Your parents' deposit certificate of more than 50,000 yuan
3. If the parents' salary does not flow, provide a set of 50% business in the name of the mother.
Before Korea, it was necessary to pay a deposit to the travel agency mainly to prevent China people who were illegally stranded from staying in Korea. The embassy has to do this. You said you wouldn't stay, but how can you prove it? All agents need a deposit. Unless you see whether the embassy in your area accepts individual applications, the embassy, consulate and residence are different. If you can accept it, you can do it yourself without a deposit.
If the information is complete and the deposit is paid, it will not be so difficult to apply for a Korean visa. I suggest you apply for a visa as a student, so you can use your parents' real estate as the visa application materials. Otherwise, if you have already worked, you can't use your parents' materials.