Why is it colder after the solstice in winter?

After the solstice in winter, the weather is very cold, so everything is sheltered from the cold. The ancients believed that from the winter solstice, the world of yang began to flourish, that is to say, the next cycle began, and the world of yang rose to the winter solstice, which was a "good day"

Among the people, there is a custom of offering sacrifices to ancestors from the winter solstice. The ancestor worship ceremony from winter solstice is the same as New Year's Day. While offering sacrifices to ancestors, people should also pay homage to their parents and elders. In ancient times, there was a custom of offering shoes and socks to the elderly, which is still very popular in modern times.

Extended data

Winter solstice is a solar term divided by astronomy, which was called "short day" and "short day" in ancient times. From winter to the sun, the sun is located at 270 degrees of the Yellow Meridian, and the sun shines almost directly to the Tropic of Capricorn, which has the shortest day in the northern hemisphere. Accordingly, the daytime from winter solstice in the southern hemisphere is the longest in the whole year.

The Winter Solstice Festival originated in the Han Dynasty, flourished in the Tang and Song Dynasties, and has been passed down to this day. Lu even said that the winter solstice is as big as a year. This shows that the ancients attached great importance to the winter solstice. People think that the winter solstice is a natural transformation of Yin and Yang and a blessing from heaven. In the Han Dynasty, the winter solstice was regarded as the "Winter Festival", and the government held a congratulatory ceremony called "He Dong". Vacation.