China is divided by academic year. Each semester lasts for 4 months on average, and a year is divided into two semesters, namely, the first semester and the second semester. Last semester started in September in summer, and ended in June of the following year, 65438+ 10, with winter vacation. The winter vacation is about one and a half months. Then the next semester begins in late February or early March in spring and ends in July. This is a school year. As for freshmen and sophomores, how to divide them? That is to say, you are a freshman when you enter the university, a sophomore when you finish the first academic year, and so on.