Lidong, together with spring, summer and autumn, is known as the four Lidongs, which was an important festival in the ancient society. On this day, the emperor would lead the civil and military officials to the northern suburb of the capital to set up an altar to offer sacrifices. The understanding of "winter", we can not just stay in the meaning of the beginning of winter. Tracing back to the roots, the ancient people's understanding of "立" is the same as the modern people, is the establishment, the beginning of the meaning. But the word "winter" is not so simple, in the ancient book, "seventy-two lunar calendar" in the interpretation of "winter" is: "winter, the end is also, all things are collected," meaning that the fall crop Meaning that all the fall crops are harvested and dried, collected into the warehouse, animals have also been hidden in preparation for hibernation. It seems that the beginning of winter does not only represent the coming of winter. To be complete, the winter is the beginning of winter, the collection of all things, to avoid the meaning of the cold.

What is the significance of winter

Lidong is one of the twenty-four seasons reflecting the seasonal changes in ancient China will be divided into three marquis: the first wait, the water began to freeze; the second wait, the ground began to freeze; the third marquis, the pheasants into the water for the mirage. Mirage, clam. Meaning that after the winter, the northern hemisphere is getting less and less solar radiation, because at this time the surface of the summer half of the year stored heat there is a certain amount of residual, so it is generally not too cold.