What is the earliest solar term in China?

Test and analysis: 24 solar terms and China first calculated the time of one year during the Warring States Period, so they chose D.

Comments: Students should know that the 24 solar terms originated in the Yellow River Basin. As early as the Spring and Autumn Period, the ancient sages of China set four solar terms: midsummer, midsummer, midsummer and winter solstice, and constantly improved and perfected them. By the Qin and Han Dynasties, the 24 solar terms had been completely established.