The origin of Winter Solstice is 200 words.

The origin of the winter solstice actually comes from the planning of a national capital. As early as more than 3,000 years ago, Duke Zhou began to measure the shadow with the earth gauge method and measure the position of the world in Luoyi. This was a move of political significance at that time, but it became one of the festivals that affected future generations for thousands of years.

When the Duke of Zhou arrived in Luoyang, he measured that Luoyang was "in the world" by the method of returning to the soil, and then began to divine the country and the land. It is recorded in Shangshu Luogu that the Duke of Zhou "looked at Luoshi" and inspected several places around Luoyang, and finally determined that Jianshui East, Zhuoshui West and Zhuoshui East were all "only Luoshi". The historical fact that the Duke of Zhou chose the base site of Luoyi through the "investigation of returning to the land" was recorded in ancient books and was regarded as the law of sealing the country by later generations.

According to the investigation of Duke Zhou, Zhou people made a detailed plan for the first national capital after the demise of Shang Dynasty. "Yizhou Zuoluo Book" said: "It is a great city, growing in the soil for a week, ... in Luoshui in the south and Mangshan in the north, and the world is in harmony." . After the national society (capital and ancestral temple) was completed, Duke Zhou set up a ritual and music system in Mingtang in the Zhou Dynasty. In other words, Duke Zhou chose the day with the longest "sun shadow" in a year as the day when the New Year began.

The ancients believed that since the winter solstice, the sun be the spirit of heaven and earth began to flourish, representing the beginning of the next cycle, which was a lucky day. Therefore, later, during the Spring Festival, customs such as ancestor worship and family dinners often appeared on the winter solstice. The solstice in winter is also called "off-year", and the first month of the Zhou Dynasty is equal to today's November, so there is no difference between New Year's greetings and New Year's greetings. It was not until Emperor Wu of the Han Dynasty adopted the summer calendar that the first month was separated from the solstice in winter. Therefore, it can also be said that the "Winter Solstice Festival" began in the Han Dynasty, flourished in the Tang and Song Dynasties, and has existed ever since.