If there is no negative proof of language ability, students can apply for further Korean courses in the Language Institute. Schools that accept secondary school diplomas in Seoul include Xijiang University, Central University, Shi Chong University and Jianguo University. However, the Language Institute has considered the graduation years of students' final education. There is no problem within two years of graduation. Students who have graduated for more than two years need to submit proof of stable on-the-job income after graduation. The financial situation of students' families should also be considered accordingly.