According to 3.com, a senior, most universities in Chinese mainland implement a two-semester system, with the first semester from September to the following year 1 month and the second semester from February (according to the date of the Lunar New Year) to June. About four or five months of class time each semester. The summer vacation of college students is generally 60 days, that is, two months. The holiday is from early July to early September. Individual schools have a holiday since the end of June. Although the vacation time is different, the vacation days are similar.