What do you mean by anti-spring?

Anti-spring, also known as late spring cold, refers to the weather phenomenon that the temperature rises rapidly in early spring (generally refers to March) and the temperature in late spring cold (generally refers to April or May) is lower than normal. Long-term rainy weather or frequent cold air intrusion, or strong radiation cooling in sunny nights under the control of continuous cold and high pressure, are easy to cause late spring cold.

In early spring, the climate is changeable. If the cold air is strong, the temperature can drop to below 10℃, even in rainy and snowy weather. At this time, it is often sunny during the day, which makes people feel that "warm wind makes tourists drunk", but it is chilly in the morning and evening, which makes people feel "chilly in spring". This unpredictable "fickle" weather is what is commonly called "cold spring". It is easy to adversely affect agricultural production and residents' lives.

The origin of solar terms:

Since the solar terms in beginning of spring, the time series has entered the spring. Beginning of spring is the time when the sun be the spirit was born, and everything gradually recovered. Spring has begun. In nature, the most striking feature is that everything is beginning to show signs of recovery. In beginning of spring, you can obviously feel the breath of early spring in the Tropic of Cancer and its south of China.

In most parts of northern Israel, it can only be said that it is a prelude to entering spring. Everything has not been restored, or in the winter when everything is closed. For the area north of the Tropic of Cancer, the farther away from the Tropic of Cancer (where the Yellow River meets the pond), the later the spring comes. Astronomically speaking, early spring means warmth, birds and flowers; This is the season when plants germinate and grow, animals reproduce and farmers sow in the fields.

Twenty-four solar terms are the product of ancient farming civilization, which occupies an extremely important position in China's traditional farming society. Before the Qin and Han Dynasties, the customs and cultures of the north and the south were different. In some places, the first day of the lunar calendar is not the first day of the lunar calendar, but beginning of spring and beginning of spring have 24 solar terms.

The beginning of New Year's Eve is of great significance to the traditional farming society. Major celebration activities, such as ancestor worship, praying for New Year's blessings, exorcising evil spirits and avoiding disasters, saying goodbye to the old year and welcoming the new year, are all held around the Spring Festival. This series of festivals not only constitutes the framework of the New Year's Eve Festival in later generations, but also retains its folk function to this day.

Refer to the above? Baidu encyclopedia-fangchun