Fourth, history does not have to be brushed every semester. According to relevant data, the general elective course of "Four History" is offered in the third semester. All students must take one of the four courses in the third semester, namely, the history of China, the history of People's Republic of China (PRC), the history of reform and opening up and the history of socialist development, and get credits after passing the examination. Specific courses of the "Four History" category: the history of China, the history of People's Republic of China (PRC), the history of reform and opening up and the history of socialist development. There are 50 courses in this round of "Four History".