Detailed explanation: What is the solar term?

The twenty-four solar terms reflect the influence of the sun on the earth and belong to the solar calendar category. The twenty-four solar terms express the unique concept of time between human beings and the natural universe. It is an important part of the long history and culture of the Chinese nation and embodies the historical and cultural essence of Chinese civilization.

Twenty-four solar terms were established in ancient times. After historical development, they were absorbed into taichu calendar in the Han Dynasty as a supplement to the Agricultural Calendar. The current lunar calendar absorbs the "twenty-four solar terms" of the trunk calendar as a supplement to the calendar, and is adjusted to conform to the tropic year through the "leap method" to form a combined calendar of yin and yang. ?

Twenty-four solar terms are not only the time criterion promulgated by successive governments, but also the compass to guide agricultural production and to predict cold, warm, snow and rainy days in people's daily life. In the field of international meteorology, the 24 solar terms are known as "the fifth invention of China".