What's the climate like in Sichuan?

The general characteristics of Sichuan climate are: the monsoon climate is obvious, and the rain and heat are in the same season; There are significant differences in regional performance, such as warm winter, early spring, hot summer, autumn rain, cloudy, less sunshine and long growth period in the east, cold winter, basically no summer, abundant sunshine, concentrated precipitation and clear dry and wet seasons in the west; The vertical change of climate is great, and there are many kinds, high frequency and wide range of climatic and meteorological disasters. According to the differences of water, heat and light conditions, Sichuan can be roughly divided into three climatic zones: ① The Sichuan Basin is a humid climate zone in the middle subtropical zone, and the Sichuan Basin and its surrounding mountains are warm and humid all the year round, with an annual average temperature of 16- 18℃, a small daily temperature difference, a large annual temperature difference, and warm in winter and hot in summer. ② Subtropical and semi-humid climate zone in the southwestern Sichuan. The annual temperature in this area is relatively high, with an annual average temperature of 12-20℃, which is cold in the morning and warm in the afternoon. The four seasons are not obvious, but the wet and dry seasons are distinct and there is less precipitation. There are few clouds, many sunny days and long sunshine hours. (3) The alpine plateau in northwest Sichuan. The altitude difference in this area is great, and the three-dimensional climate changes obviously. Generally speaking, the climate is dominated by cold temperate zone, with dry and warm valleys, wet and cold mountains, cool Leng Xia in winter and insufficient water and heat. The annual average temperature is 4- 12℃, and the weather is sunny and sunny.