I want to draw a golden sun for autumn, because what happens to sunshine?
I want to draw a happy sun for poor students, because I hope they are as happy as we are.
I want to draw a yellow sun for autumn, because the wheat in the rice field is ripe and the farmer's uncle can get a bumper harvest.
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 Bao _, there are four seasons in a year. The index is that the period when the average temperature is below 10℃ is winter, the period when it is above 22℃ is summer, and the period when the average temperature is 10~22℃ is spring and autumn respectively.
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. In nature, the qi of Yin and Yang began to change, the yang gradually declined, the yin gradually emerged, the climate changed from hot to cold, and everything was born with cold and gradually declined. According to modern meteorology, the autumn in the north temperate zone is from August 23rd (summer) to165438+1October 22nd (light snow). Autumn in the south temperate zone is from February 19 (rain in the northern hemisphere) to May 2 1 (xiaoman in the northern hemisphere). At present, the division of the four seasons in China is often based on the change of temperature, which is based on the division of "climate average temperature" by modern scholar Zhang Bao. According to the weather average temperature method, there are two main criteria to judge autumn. First, the average daily temperature for five consecutive days 10℃-22℃ can be regarded as autumn and become a "short mark"; Second, the moving average temperature of five consecutive groups is lower than 22℃. A set of moving average temperatures refers to the average temperature of the day plus the average temperature of the previous four days divided by 5 to get the moving average temperature of five days, which is a "sliding scale". Entering autumn means that the hot weather has passed and it is beginning to cool down.