What do you mean always?

Dan's age is the first day of the year, the beginning of all things, and it represents the beginning of all things and the significance of all self-improvement. As a traditional farming society, the ancients attached great importance to beginning of spring, which is of great significance to the traditional farming society.

Worship the gods and ancestors, pray for the New Year, dispel evil spirits and eliminate disasters, bid farewell to the old year and welcome the new year, and other major celebrations are arranged on New Year's Eve. This series of festivals not only constitutes the framework of the New Year's Eve Festival in later generations, but also preserves its folk function.

Dan, aged 18, is the beginning of a calendar year. The age of early observation of images and timing was determined according to the changes of stars. In the main branch era, "Yin Hui, bucket handle" was regarded as "the first month of spring", and beginning of spring was the beginning of the year. Tianyuan, which started in Yin,

For example, "The Astronomical Training of Huainanzi" says: "Emperor Zhang Siwei was transported to war, moved to another place one day in the middle of the month, and returned to another place. The first month refers to yin, February refers to ugliness, and at the age of one, turn around and start all over again. " Run in December, cycle after cycle. The end of December refers to the ugly side, and the first month returns to the yin position. "bucket handle returns to Yin", spring returns to the earth, entering a new cycle, everything is renewed, and the New Year opens.

Yin Jian's first month, also known as the "Yuan" month, beginning of spring is January and January, and beginning of spring is the era of official support. In Historical Records, beginning of spring is called "the first year of Wang". TianGuanShu: "the first month, the first year of the king, spring, four o' clock". Spring is the first of the four seasons, beginning of spring is the beginning of spring, and beginning of spring is the beginning of a year.

Before the Qin and Han Dynasties, the customs and cultures of the north and the south were different. In some places, the first day of the lunar calendar is not the first day of the lunar calendar, but the year of beginning of spring, with 24 solar terms. In the long farming society, the 24 solar terms play an important role, with rich cultural connotation and a large number of related folk culture, which contains a long cultural connotation and historical accumulation.