Picture books feature 24 Chinese solar terms

A set of picture books featuring the scientific principles and customs related to the 24 Chinese solar terms has recently been published.

The ancient Chinese used to divide the sun's annual circular motion into 24 segments, with each measuring around 15 days, to represent a "solar term", which indicates the seasonal climate changes and the consequent life cycle events of plants and animals.

The terms originated in the Yellow River area and the names of the solar terms reflect the observation of the heavens, temperature, rainfall and other natural phenomena in this region.