Which of these is a characteristic of the Autumn Equinox

The autumnal equinox is characterized by the equal division of day and night, a cooler climate, and a gradual narrowing of the temperature difference between the north and the south, which is related to the following:

1. Surface temperatures begin to fall: At the autumnal equinox, the residual heat of the summer is gradually dispersed. Daytime temperatures are gradually cooler, and the angle of sunlight in the afternoon becomes lower, making temperatures no longer as hot as in summer. Nights, on the other hand, seem relatively cold, and people may need to add more clothing to keep warm. This increase in temperature difference is a distinctive feature of the fall equinox and a clear indication of the temperature transition.

2. Humidity is more moderate: Humidity is usually higher in the fall equinox than in the summer, but compared to the humid summer, the humidity is more moderate in the fall equinox. This moderate humidity makes the air relatively fresh, and people breathe easier and are more comfortable in such weather. However, because of the humidity, showers or cloudy weather can also occur during the fall equinox, causing some disruption to people's outdoor activities.

3. Turning point for plant growth: In nature, the fall equinox is also the time when the leaves of trees gradually turn yellow, red and brown and then fall to the ground. This scene is called "leaf fall", is a unique landscape in the fall. As plant growth slows down, animals begin to prepare for the upcoming hibernation period, possibly storing more food and seeking a safe place to live.

Information about the 24 Solar Terms

1. The 24 Solar Terms, the crystallization of the wisdom of the ancient Chinese people, are part of China's ancient agricultural and cultural system according to the position of the sun on the ecliptic as the Lichun, the rain, the hibernation, the vernal equinox, the clearing of the sky, the valley rain, the Lixia, the small fullness of summer, the mango seeding, the summer solstice, the heat of the summer, the summer heat, the fall, the white dew, the fall, the summer of autumn, and the white dew. , summer heat, white dew, autumn equinox, cold dew, frost, winter, snow, snow, winter solstice, cold and cold.

2. Each of the twenty-four solar terms has its own unique climatic characteristics and cultural connotations. Lichun, the beginning of spring, marks the gradual passing of the cold winter and the gradual warming of the weather. The rainy season, on the other hand, signals the increase of rainfall to provide water for the growth of crops.

3. The twenty-four solar terms are not only a division of time in an agricultural society, but also contain rich cultural connotations. It reflects the ancient people's observation and cognition of natural phenomena, as well as the traditional lifestyle and cultural traditions of the Chinese people. To this day, these festivals still play an important role in traditional Chinese festivals and agricultural activities, and maintain a continuous influence.