You can't. According to the official website of Yuji Gong Xin School, there are no ordinary classes in Yuji Gong Xin School. Gong Xin School in Yuci, Shanxi Province is a full-time public technical school, which is a vocational and technical school integrating technical education, short-term training and skill appraisal. Since its establishment, it has been committed to improving the quality of technical education.