The twenty-four solar terms are the specific seasons in the calendar to indicate the change of natural rhythm and establish "December construction". At the age of four, there are three months in spring, summer, autumn and winter. There are two solar terms every month. Each solar term has its own unique meaning. The twenty-four solar terms accurately reflect the changes of natural rhythm and play a very important role in people's daily life. It is not only a season system to guide agricultural production, but also a folk custom system with rich folk events. The 24 solar terms contain a long cultural connotation and historical accumulation, and are an important part of the long history and culture of the Chinese nation.