The resumption of classes is expressed in classical Chinese through time and season, and the primary education in Han Dynasty mainly uses slack time. The admission time is divided into: the first month of farming, the summer retreat in August, and the freezing time of 1 1 month. Winter study is more of a "three-month system"; The August system is generally "going to school" and "closing at the end of August"; The December system is generally "opening after the first month" and "closing at the end of the year". And holidays. In the years of dead branches and cold ling, I have seen the east wind called Chunhong. A temptation scares away hundreds of birds, and thousands of miles of red and green welcome home. Ling Bo swings, and his heart overflows. Winter goes and spring comes. Look at Guilin, the leaves are very long. He Meng, Guo Qichuang, Epidemics. Looking at the jade peak, bathing Xia Guang. Near the campus, Yu Lanfang. The real little people, who dare Zhen Chen, such as Shuang Hu and Mu, are enlightened.