Why does it take a long time to warm up after the vernal equinox?

The vernal equinox is the fourth of the twenty-four solar terms and the fourth of the six solar terms in spring. The vernal equinox begins on March 20th (or 2 1) and ends on April 4th (or 5th) every year. The vernal equinox refers to the equal division of day and night, and every day is 12 hour. The common people say that "the vernal equinox is divided equally between day and night". The so-called "spring equinox is half yin and half yang, cold and hot day and night." There is a saying that "the vernal equinox and the autumnal equinox are equally divided day and night". The vernal equinox is also called "the vernal equinox month". It has obvious climatic characteristics: cold in late spring, spring drought, dust, low temperature and rainy weather. The obvious characteristics of these days are chilly spring, low temperature, cold wind and cloudy weather.

There are many folk customs in the vernal equinox, do you know? Fly kites, women and children fly kites. And write a blessing on the kite, hoping that the gods in the sky can see it. There is a kite festival around mid-April every year, the most famous of which is Weifang Kite Festival, which attracts the attention of the whole world. It's the vernal equinox, and the eggs look good. Every spring equinox, tens of millions of people all over the world are doing experiments of "laying eggs". The vernal equinox has become the best time for the vertical egg game. I don't know why it is easy to lay eggs every spring equinox. At present, it is difficult to research why this toy named "China Custom" has become a "world game".

The game of "laying eggs" is simple and interesting: choose a smooth and symmetrical fresh egg that has just been laid for four or five days and gently stand on the table. It is said that whoever lays eggs will have good luck for a year. Pictures of cows in spring. The solar terms of the whole lunar calendar are printed on the red or yellow paper, and the patterns of farmers ploughing fields are also printed, which is called "Spring Cattle Map". It is timely and auspicious to send pictures, commonly known as "spring" and "spring official" to stick to the bird's mouth. On the vernal equinox, farmers have a holiday according to the custom, and every family has to eat glutinous rice balls. Besides, we have to cook dozens, twenties and thirties of jiaozi, so there is no need to keep it in our hearts. We put them in the outdoor field with thin bamboo forks, which is called sticking birds' mouths, so as not to damage crops.

There are many customs, such as eating spring vegetables, worshiping God, offering sacrifices to spring and the sun, but we are not familiar with them. During the spring equinox, the temperature in the north and south of China rose to above zero, and everything entered the rush stage in Spring Festival travel rush. That's "flies, peaches, apricots bloom in spring, butterflies dance and bees come", flowers bloom in spring, and fine weather is coming, so you can go for a walk ~