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What if there is no calendar! How did the ancients determine the beginning of winter

DailyBird Culture 2021-10-08 1 0

now, we look at the date through the calendar and the time through the watch. Can you imagine what your life would be like without these two? The ancients were really wise and could accurately judge time without conditions. Do you know how the ancients determined when Lidong was? Hurry and Xiaobian to see how wise the ancients were.

立冬 may also be interested in the origin and customs of the beginning of winter

as early as the spring and Autumn period and the Warring States period, China has been able to measure the length of the noon sun shadow with Tu GUI (erect a pole on the plane) to determine the four solar terms of winter solstice, summer solstice, spring equinox and autumn equinox. In a year, at noon, the shortest day of shadow in tugui is the summer solstice, the longest day is the winter solstice, and the moderate length of shadow is the spring equinox or autumn equinox. By the Qin and Han Dynasties, a complete concept of 24 solar terms had been formed. In ancient times, a year was divided into 12 months, and each month had two solar terms. The former is the solar term, and the latter is the middle Qi. Later generations collectively refer to the solar term and the middle Qi as the solar term. From the naming of 24 solar terms, it can be seen that the division of solar terms fully considers the changes of natural phenomena such as season, climate and phenology. Among them, the beginning of spring, the beginning of summer, the beginning of autumn, the beginning of winter, the spring equinox, the autumn equinox, the summer solstice and the winter solstice are used to reflect the seasons. The spring equinox, autumn equinox, summer solstice and winter solstice are divided from an astronomical point of view, reflecting the turning point of the change of the sun's height. The beginning of spring, summer, autumn and winter reflect the beginning of the four seasons.

the time that the sun goes through every 15 degrees along the Yellow meridian from zero is called "one solar term". It runs 360 degrees every year and experiences 24 solar terms, 2 per month. At the beginning of winter, the solar yellow meridian is 225 degrees. Traditionally, our people regard this day as the beginning of winter. Winter, as the end of the year, means that the field operation of the year is over and the crops should be collected after harvest. Once winter is over, the middle and lower reaches of the Yellow River will freeze. Farmers all over China will gradually turn to farmland water conservancy infrastructure and other agricultural activities.

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records: beginning of winter, October Festival. See the front of the word solution. Winter is the end, and all things are collected. Water begins to ice. The surface of the water has initially set, but it has not yet reached its firmness. The ground began to freeze. Earth gas condenses cold, and it is not demolished. A pheasant entering the flood is a mirage. Pheasants, pheasants; Zheng Kangcheng, Huainanzi and Gao Yinju all note that mirage is a big clam. The jade chapter also says: mirage, big clam. Mozi also said: clam, a mirage, is not a clam? In the notes to the book of rites, it is said that Jiao belongs to the genus, and in the book of rites, it is explained by clams and mirages. It seems that it is not a clam. However, according to the article of chela in Materia Medica, chela is a big clam, a mirage. It can exhale for a building, and taste the mirage beside the sea to form a building wall. The chapter turtle Sutra says that a mirage is a wheel Island, and the moon breathes out into a building, which is the same as the dragon. It is clear that this is a clam. In Er Ya Yi, Zhou's rites are cited to argue that mirage is a clam. Notes to the book of rites refers to the pheasant. Due to the theory of snake transformation, the pheasant is regarded as a mirage. It is said that it looks like a snake and is large, and the scales under the abdomen are all against the scales. I know it, but I doubt it again: it looks like a dragon, has ears and horns, and I can also smell and know it. It is not like a thing's ear if it is true in Materia Medica and Zhang Gui Jing. Flood, Huai also, Jin said: pheasant into the Huai is a mirage.

you may also like: the character of people born in the beginning of winter, "frozen" people? Who should be cautious after the beginning of winter? How important was Lidong in ancient China? The emperors all attach importance to Lidong's marriage. How about Lidong's marriage in 2016

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