How much does it cost for a person to travel from Shenzhen to Korea?

In the past, Hong Kong flew to Seoul, and the round-trip ticket was 1600. The visa was signed in Guangzhou. Because I live in Zhongshan, the visa fee and transportation fee are about 500 yuan. Accommodation is a homestay, and the house is more than 300 a night, which is cheaper. I live near Hongda, and the traffic is very convenient. The main means of transportation is the subway. After eight days, the transportation fee should be above 300 yuan. You have to rent wifi eggs.