What changes have taken place in nature?

There is a word called hibernation, which means that everything is asleep before hibernation. After the shock, everything recovered. "Spring thunder, everything grows long", it is a sunny day in September, the temperature rises, the rain increases, and farmers have no leisure. It can be described as Heshui Zuo's "a thunderbolt startled snakes and insects, and several showers were raining purple. In 1999, the wind in the south of the Yangtze River warmed up and the green fields began to plow in spring. " At this time, the average temperature in most parts of China has risen above 0℃ except the winter scenes in the northeast and northwest. The average daily temperature in North China is 3-6℃, and that in the south of the Yangtze River is above 8℃. The southwest and south China 10- 15℃ are already harmonious spring.