Ye Luofang knows autumn well.

Autumn leaves know the depth of autumn.

When leaves fall, you know autumn. When you see yellow leaves falling to the ground, you know autumn is coming. Refers to the development and change of events can be predicted by signs.

Autumn leaves have fallen, and autumn is getting deeper and deeper. In this harvest season, the most beautiful things are colorful leaves. Pieces of fallen leaves decorate the eyes of every pedestrian with the most gorgeous colors, which makes people indulge in the disappearing scenery. Pieces of yellow leaves, entrusted with the thoughts of the earth, the joy of harvest, and the attachment to summer.

Autumn is one of the four seasons. In China, traditionally, "beginning of autumn" in the 24 solar terms is taken as the starting point of autumn. Entering autumn means that rainfall and humidity tend to decrease or decrease, and everything in nature begins to mature from lush.

According to the average climate temperature of modern scholar Zhang Baokun, there are four seasons in a year. The index is that the average temperature is lower than 10℃ in winter, higher than 22℃ in summer, and 10~22℃ in spring and autumn respectively.