China Naming Network - Eight-character query< - How did the ancients in China observe the solar terms?

How did the ancients in China observe the solar terms?

The ancients knew nothing about the ecliptic, but observed it with the naked eye. According to the relationship between the position of the sun and the moon and natural phenomena such as weather, animal and plant growth at the beginning and middle of the month, the year is divided into 24 equal parts. And give each equal part a proper noun, that is, twenty-four solar terms.