Foundation of legal specialty. Cuhk refers to Sun Yat-sen University. According to official website of Sun Yat-sen University, Sun Yat-sen University is allowed to change majors. When entering the sophomore year, students can apply to their college and pass the exam. Among them, the legal professional examination subjects are the basis of legal major, and the examination questions are not fixed. This is an open-ended question, and no bibliography is specified.