Hi.i am from pakistan and study in south korea..i want to visit china in my vocation for one week...

You can try to apply for tourist L type from the CVASC. First, prepare the relevant documents including your passport and its copy, the residence permit in South Korea, the application form, a passport-style photo, round trip air tickets, hotel reservation, and an invitation letter from a duly authorized unit. Next, submit the application to the CVASC.