What is an "autumn tiger"?

Autumn tiger refers to the transition period from summer to autumn. After the temperature drops, it suddenly rises again, and there is a period of continuous high temperature weather.

Autumn is one of the four seasons. In China, traditionally, the "beginning of autumn" with 24 solar terms is 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.