What is the moral of beginning of autumn?

It symbolizes that everything begins to mature from luxuriance, and the sun in beginning of autumn gradually closes and the yin grows.

Beginning of autumn is the beginning of autumn, and the harvest season is coming. The most obvious change in autumn is that the leaves of vegetation change from lush green to yellow, and the leaves begin to fall and the crops begin to mature. Beginning of autumn is one of the "four seasons and eight festivals" in ancient times. There are folk customs such as offering sacrifices to the land gods, celebrating the harvest, releasing autumn fertilizer, biting autumn and gnawing autumn.