Autumn's reputation in ancient times.

In ancient times, autumn was called New Autumn, Zhao Qiu, Qiu Lan, Zhengqiu, Mid-Autumn Festival, Guiqiu, Gao Qiu, Late Autumn, Cool Autumn, Late Autumn, Residual Autumn, Plain Autumn, Poor Autumn, Jintian, Shangqiu, Western Regions, Bai Zang, Shuang Jie, Qiuqiu, Gao Qiu, first frost and so on. Autumn generally refers to autumn, which is one of the four seasons of "spring, summer, autumn and winter".

autumn

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.

Autumn is the harvest season, and many plants mature in autumn. In autumn, in nature, the qi of yin and yang begins to change, the yang is gradually declining, the yin is gradually flourishing, the climate turns from hot to cold, and everything is born with cold and gradually declines. This is the season of alternating hot and cold.

In autumn, the direct point of the sun gradually moves south from the northern hemisphere, passes through the equator after the autumnal equinox, and the sun directly shines in the southern hemisphere. Seen from the northern hemisphere, the angle of the sun gradually becomes lower, and the gap between day and night becomes smaller. At the autumnal equinox, the length of day and night is equal.