The vernal equinox usually refers to the time when the sun is located at 0° of the ecliptic (the vernal equinox) around March 20 of each year on the Gregorian calendar. On this day, the sun shines directly on the earth’s equator, and the seasons are reversed in the northern and southern hemispheres, which is the vernal equinox in the northern hemisphere and the autumn equinox in the southern hemisphere. There are many folk customs about the vernal equinox. The sun and the moon are both yin and yang, and the birds do not resent the cold peach blossoms. Today is the day when the rooster is erected and the paper kite is set free by the good man on the river. –The “erecting rooster” mentioned in this article is the popular “erecting egg game”. As the saying goes, “When the spring equinox arrives, the eggs are beautiful,” and people often choose fresh eggs that are smooth and well-proportioned and have just been laid for four or five days to play the egg erection game on the spring equinox. 1, vertical egg game Although some scholars have confirmed that the vertical egg and the vernal equinox are not closely related. For one thing, the egg is erected because of the earth’s gravity, as long as the center of gravity of the egg is lower than the position of the curve of the maximum circumference of the egg. Furthermore, the surface of the egg shell is not smooth, so as long as the appropriate three surface particles are found, and according to the reasoning that three points form a triangle and determine a plane, as long as the center of gravity of the egg passes through this triangle, it can hold up the whole egg. However, it is also believed that the vernal equinox is the day when day and night are equally divided between the northern and southern hemispheres, and the earth’s axis is tilted at 66.5 degrees, which is in a relative balance of forces with the plane of the earth’s orbit around the sun, which is conducive to the vertical egg. Secondly, the vernal equinox is in the middle of spring, warm and comfortable, the heart is relaxed, quick thinking, sharp movements, easy to erect eggs successfully. 2. Another traditional custom is kite flying. Since ancient times, people hope to avoid evil spirits and express their prayers for the New Year by flying kites. Besides, kite flying is also a good exercise for the whole body. In the process of kite flying, people have to keep running, holding the line and controlling, and all the muscles and joints of the body have to participate in the activity. It is good for relaxing the muscles and bones and moving the muscles. In the “Continuing Museum”, it is said that “the spring release of the kite, the lead and up, so that the children open their mouths and see. Can drain the internal heat.” It is also stated in “The Record of Yanjing Years and Times” that kite flying is good for eyes: “Children flying kites in the air, the latest clear eyes.” This is because when flying, the eyes have to keep staring at the kite in the high altitude. The effect of overlooking from afar can regulate the function of eye muscles and eliminate eye fatigue, thus achieving the effect of protecting eyesight. There are also rich folk activities such as eating spring vegetables, sending spring cattle, sticking to the mouth of the bird, spring festival and worshipping the gods at the vernal equinox, so I won’t repeat them here. Next, we will talk about the people’s health events The vernal equinox is half yin and half yang, the focus of health should be to reconcile yin and yang 1, diet: the vernal equinox and the dormant is the same as the middle of spring, the liver is strong at this time, the kidneys are weak, diet to quit acid and increase pungency. In addition, the liver is easy to grasp the spleen and earth, should pay attention to strengthening the spleen to dispel dampness. Eat more sweet food, such as yam, wolfberry, jujube, spinach, chicken, etc. 2, exercise: “Suwen – to the true to the great theory” mentioned that “careful to check where the yin and Yang and adjust the period of peace.” People should harmonize exercise according to the condition of yin and yang at different times, so that the internal organs, qi and blood, essence of the physiological movement and brain, physical strength and sports balance each other. The spring equinox, the grass is long and the birds are flying, suitable for excursions and trekking, in order to enjoy the body and mind, dredge the liver and Qi. 3, living: the vernal equinox temperature gradually warm, but the temperature difference between day and night, this time should be appropriate to increase and decrease clothing, especially pay attention to the lower extremities and feet to keep warm. “Do not be extremely cold, do not be too hot”, wear clothes can be thick on the thin. Comply with the “spring in March, this is called hair Chen. The earth and sky are in full bloom, and all things are glorious. The principle of “sleep at night and get up early, walk widely in the garden, and walk slowly with your hair, so that the will is born”, sleep late and get up early, and walk slowly. Spring is already half over, why not take advantage of the sunshine, two or three friends, enjoy the flowers, fly paper kites, and live life as bright as spring. The Almanac: “Fifteen days after the vernal equinox, the bucket refers to Ding, for the Qingming, when everything is clean and clear, cover when the gas is clear and bright, all things are revealed, so the name.”