What solar terms do 12 refer to?

Twelve solar terms: beginning of spring, Jing Zhe, Qingming, Long Summer, Mangzhong, Xiaoshu, beginning of autumn, Bailu, Hanlu, beginning of winter, Heavy Snow and Slight Cold.

Solar term: It is a special festival in the trunk calendar that shows the change of natural rhythm and establishes the month order of "December".

Twenty-four solar terms are the product of ancient farming civilization, and farming production is closely related to the rhythm of nature. It is a knowledge system formed by ancient ancestors following the farming season, observing the movement of celestial bodies and understanding the changing laws of the Middle Ages, climate and phenology.