The word "university" originally refers to the enrollment batch of the national unified examination for enrollment of ordinary colleges and universities. Generally speaking, the enrollment batches of the national unified examination for college enrollment are divided into "undergraduate advance batch", "undergraduate batch", "undergraduate batch 2", "specialist batch 1" and "specialist batch 2". Several extended information universities refer to the enrollment batches of the national unified examination for enrollment of ordinary colleges and universities, which mainly include undergraduate advance approval, a batch of undergraduate, a second batch of undergraduate and a third batch of undergraduate. Generally, the first batch of undergraduates are mainly military, public security colleges and national defense students, art candidates and tuition-free normal colleges, as well as some special majors such as customs and navigation. In addition, some provinces cancelled the third batch of undergraduate courses, such as Beijing, Shanghai, Tianjin, Hebei, Zhejiang, Jiangsu, Shandong, Fujian, Sichuan, Guangxi, Hubei, Jiangxi, Shanxi, Liaoning and Hubei.