When is the beginning of spring?

Beginning of spring is the first of the 24 solar terms in the lunar calendar, and the time is around February 4th in the Gregorian calendar.

Introduction of solar terms:

Beginning of spring is not only the first day of the 24 solar terms of the lunar calendar, but also the first day of silver moon, and it is also an important festival. Since the Qin Dynasty, China has always regarded beginning of spring as the beginning of spring. Silver moon is the first year of the summer calendar, while silver moon is the first year of the Han Dynasty. Therefore, beginning of spring is the first day of the official calendar, also known as "Lunar New Year", "Lunar New Year" and "Spring Festival", which represents the first day of a year (the year of returning to China) and is equivalent to the current "New Year's Day" in the Gregorian calendar. Beginning of spring is divided from astronomy, but in nature and people's minds, spring is warm and flowers are fragrant. Spring is growth, cultivation and sowing. In climatology, spring refers to the period when the average temperature is between 10℃ and 22℃.

On this day in beginning of spring, "the sun and thorns are in harmony, and everything is spring". After beginning of spring, everything is full of vitality, and all the seasons have begun. There is an old legend that when spring comes, county officials will dig a hole in the land with local celebrities and then put feathers, chicken feathers and other light materials in the hole. At a certain time, the feathers and chicken feathers in the hole will float up from the hole. This moment is the beginning of spring, and people will set off firecrackers to celebrate, wishing the good weather and good harvest in the coming year.

The ancient book Qunfangpu explains to beginning of spring: "The foundation has also been established. Spring began and was established. " During the early spring, the temperature, sunshine and rainfall began to rise and increase. But all this is just a prelude to the arrival of spring in most parts of the country.

After beginning of spring, the temperature rose, and most parts of the country began a busy spring ploughing season. Beginning of spring solar terms began, westerly jet, the southern branch of East Asia, began to weaken, and the winter climate was coming to an end. However, the intensity and location of the northern branch of westerly jet remain basically the same, the Mongolian cold high and Aleutian low are still relatively strong, and gale cooling is still the prevailing main weather. However, during the intermission under the influence of strong cold air, the frequency of southerly winds increases, accompanied by an obvious warming process.

Beginning of spring is a time point or period. China tradition divides beginning of spring's Tenth Five-Year Plan into three periods: "The east wind thaws, insects begin to tremble, and fish lose ice", which means that the east wind warms up and the earth begins to thaw. Five days after beginning of spring, hibernating insects slowly woke up in the cave. Five days later, the ice in the river began to melt and the fish began to swim on the water. At this time, there are still broken borneol on the water, floating on the water like fish.