What does summer mean? What is the connection between the two solar terms? What does summer heat mean?

1, summer heat connection refers to the connection of two solar terms: light summer heat and great summer heat.

2. This sentence comes from Twenty-four Solar Terms. Twenty-four solar terms were formulated by the ancients according to the ecliptic plane, belonging to the solar calendar category, and were concluded in the pre-Qin era. In the Han Dynasty, taichu calendar was absorbed as a supplementary calendar to guide farming. It was not only a time standard promulgated by governments in previous dynasties, but also a compass to guide agricultural production.