The calendar year in beginning of spring is basically fixed, most years are February 4th, and some years are February 3rd or 5th. Therefore, according to the Gregorian calendar, there will be beginning of spring every year, whether it is a normal year or a leap year. In the leap year of the lunar calendar, there are 25 solar terms in a year, and there will be beginning of spring at the beginning and end of the year. People call this situation "the second spring year" and "the second spring year and the first winter".
Beginning of spring marks the end of the winter when everything is hidden and begins to enter the warm and sunny spring. In nature, the most striking feature of beginning of spring is that everything is beginning to show signs of recovery.
As far as beginning of spring is concerned, you can obviously feel the breath of early spring in the Tropic of Cancer (Huangchi Jiao Jiao) and its south. Due to China's vast territory, large span between north and south, and different natural rhythms, the "beginning of spring" in many areas is only a prelude to spring, and everything has not yet recovered, and it is still in the winter when everything is hidden.
Phenological phenomena:
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. The area north of the Tropic of Cancer can only be said to be a prelude to spring. Everything has not recovered yet, and it is still 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. ?
Some ancient works of China divided the 15th beginning of spring into three periods: "The east wind thawed, the insects began to vibrate, and the fish became cold", which means that the east wind warmed up and the earth began to thaw. Five days after the spring, the stinging 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.