24 Seasons Chinese Calendar. Through observation of the natural world, the ancient chinese created a calendar system that is “lunisolar” meaning it considers both the movements of the sun (solar) and the moon (lunar). Solar terms is a calendar of 24 periods and climate to govern agricultural arrangements in ancient china and functions even now.

Each term represents a specific astronomical event or natural phenomenon that occurs during the year, such as the solstices, equinoxes, and the beginning of each season. 24 solar terms indicates different periods of seasons, the changes of weather, some natural phenomena and more.