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Many people should be looking forward to the spring this year. No matter when it is full of spring, many people like spring very much. When the spring is warm and the flowers are blooming, they all like to go out for outings. They can feel the spring. Today's equinox is the year 2020. Maybe it's the year 2020. People talk about it the most. So how did the equinox come? What are the traditional solar terms at the equinox? What should we pay attention to in terms of diet and clothing on the Equinox Day? What do you eat on the equinox and what foods are suitable for spring breeze? What are the solar term customs of the vernal equinox? Today, let's understand the definition of the solar term vernal equinox, which is the fourth of the 24 solar terms. The Chinese character "Fen" indicates that the Yellow meridian of the sun is 0 degrees at this time. The position of the sun is recorded in the red calendar: "Dou Zhiren is the vernal equinox, which runs about the whole day. The day and night of the northern and southern hemispheres are equally divided, and it is also half of the spring, so it is called" vernal equinox ". It usually refers to the time when the Yellow meridian of the sun is at 0 degrees, around February 15 of the lunar calendar (about March 19-22 in the Gregorian calendar). In the period of time, it also refers to the position of the sun between 0 ° and 15 ° of the Yellow longitude, that is, the period from the vernal equinox to the Qingming Day. The Gregorian calendar is about the day from March 20 to April 5. The sun is directly on the earth's equator. The seasons in the northern and southern hemispheres are opposite. The northern hemisphere is the vernal equinox. In the southern hemisphere, it is the vernal equinox, There are tens of millions of people all over the world making "vertical egg", which is called "Chinese custom". How can it become a "world game", but its playing method is simple and interesting: choose a fresh egg that has just been born for four or five days, and put it on the table with light hands and feet. Although there are many losers, the winner spring is the best time of vertical egg game, Therefore, there is a "equinox, eggs Qiao" stand up eggs good equinox this day, why eggs easy to stand up? Although there are many theories, the scientific truth is that first of all, the vernal equinox is a day with the same length of day and night in the northern and southern hemispheres. The earth's axis tilted by 5 degrees is in a relatively balanced state with the earth's orbit plane around the sun. Second, the vernal equinox is in the middle of spring. It is neither cold nor hot, with red flowers and green grass. People are comfortable, quick in thinking, quick in movement, and easy to erect, The surface of the egg is uneven, with many protruding "hills"“ The height of the "mountain" is about 03mm, and the distance between the peaks is 5-8min. According to the principle that three points form a triangle and determine a plane, as long as you find three "hills" and the triangle formed by the three "hills", and make the center of gravity of the egg pass through the triangle, then the egg can stand up. In addition, it is best to choose the egg 4-5 days after birth, This is because the yolk band of the egg is loose, the yolk is sinking, and the center of gravity of the egg is falling, which is conducive to the erection of the egg. The egg not only has many scientific reasons, but also contains many rich and profound philosophies. The famous Italian navigator Columbus crossed the vast Atlantic Ocean and discovered the new continent of America. Some people don't think much of his discovery, and even ridicule it as "purely accidental". At a celebration meeting, Columbus suggested that the ladies and gentlemen at the banquet try to erect the eggs on the table. As a result, none of Columbus said that if he knocked the eggs down, the eggshell broke, and the eggs would stand up. Then he said, this is what I found. It's really easy, but why don't you? The well-balanced and smooth curve of an egg is the reason why it is difficult to stand up, and it is also its charm. Leonardo da Vinci, a famous Renaissance painter in Europe, used to practice drawing egg curves every day for more than two years, which laid a solid foundation for his later success in shaping Mona Lisa's mysterious smile, Tens of thousands of eggs are the first mock exam. The beauty of the aesthetic appreciation level and egg shape of our people is fully illustrated. For a long time, people have never found the mathematical expression of egg shape curve. Even mathematicians can only approximate the artist by using rulers and compasses. No wonder artists who painted thousands of egg circles say that no two models are modern until now. Mathematicians found the following mathematical equation of egg curve: x ^ 2 / A ^ 2 + y ^ 2 / (KY + b) ^ 2 = 1, where | K | 1 finally solved the puzzle of egg curve drawing. Today, several generations of people can see the egg shaped concert hall and other buildings all over the world, which perfectly realized the surname Xie of Kaiping Cang town in Siyi (plus Heshan as Wuyi) in the past, There is a non festival custom called "eating spring vegetables on the equinox"“ "Chuncai" is a kind of wild amaranth, which is called "chunbihao" by villagers. On the day of spring equinox, the whole village went to collect the spring vegetables. When they searched in the fields, most of them were light green, with thin trees and about palms. The spring vegetables they collected were usually boiled with fish fillets at home, which was called "spring soup". There is a doggerel saying: "spring soup fills the dirty, washing the whole family, the old and the young. Since spring, people pray for the peace of the family. On the day of the spring equinox, farmers have a holiday according to the custom. Every family has to eat dumplings. Moreover, they have to cook more than ten or twenty or thirty dumplings that do not need to be wrapped in the heart. They use bamboo forks to place them in the outdoor field, which is called sticky sparrow mouth, During the spring equinox, children fly kites, especially for adults. The categories of kites include Wang Zi kites, silver carp kites, MI moth kites, Lei Gong insect kites, and Yue Er Guang kites. The bigger ones are two meters high. There are kites sold in small markets. Most of them are small and suitable for children to play. Most of them are pasted by themselves and are bigger. They have to compete with each other to see which February equinox is, Before sweeping tombs and offering sacrifices to ancestors, a grand ceremony of offering sacrifices to ancestors should be held in the ancestral temple. The sheep should be slaughtered, and drummers should play. The ritual students should read the sacrifice and lead them to the spring equinox. At the beginning of sweeping tombs, the whole family and the village should first sweep and offer sacrifices to Kaiji and Yuanzu's tombs. The scale is very large, and the team often reaches several hundred, At the latest, there is a saying all over the country during the Qingming dynasty that after the Qingming Festival, the door of the tomb will be closed and the ancestors will be used. The folk festivals before and after the spring equinox are the birthday of Kaizhang Shengwang on February 15. Kaizhang Shengwang, also known as Chen Shengwang, is a Wu Jinshi of the Tang Dynasty, Chen Yuanguang, who made great contributions to Zhangzhou, After his death, he became a Taoist priest in Zhangzhou on February 19
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