Summer vacation: refers to the school holiday from July to August, about one to two months. In China, schools usually divide each school year into two semesters. Last semester started in mid-August or early September in autumn and ended at the end of January (or mid-January) of the following year. At this time, the school began to have a holiday, and this holiday is in the cold winter in China, called winter vacation, which usually ends on the fifteenth day of the lunar calendar. The next semester begins in mid-February in spring (the 16th day of the first lunar month) and ends in early or mid-July, and the school begins to have a holiday again. This holiday coincides with the hottest summer in China, and the heat is pressing, so it is called summer vacation. At present, the summer vacation in most schools ends at the end of August, and in some places it ends in mid-August.