The ancients regarded astronomy, phenology and human activities as important references for time changes, and the concept of time period of the year should have been mastered by people as early as Xia, Shang and Zhou Dynasties. "Erya Shi Tian" has "Yue Xia is old, thinking last month, Zhou Yuenian, and Tang Yuyue is here." The Tang Yu era was probably the late Neolithic period, and that year was called "being", which means the movement and change of time. In the first year of Emperor Wu of the Han Dynasty (BC 104), the first month of the summer calendar was officially determined as the beginning of the year. Since then, although the calendar has been constantly revised, the start time of the first month has not changed, and the annual festivals are fixed. 2008 is the time symbol of agricultural society, which embodies the rhythm of farmers' life. This tradition has lasted for 3000 years in China.
As the first year of the Spring Festival, the social significance after Qin and Han Dynasties is obvious. The court regarded the Spring Festival in the first year as an opportunity to show and strengthen the righteousness of the monarch and his subjects, while the people regarded it as a good opportunity for family gatherings in rural areas. Before the Qin to Hanzhong period, the year began in October of the summer calendar, and the first day of October was the New Year. After the mid-Han Dynasty, the first day of each year falls on the first day of the first month, which is called the first month Dan, etc. The first month of the lunar calendar is an important celebration day for the royal family in the Han Dynasty, and the court will hold a large-scale court meeting. Under the influence of the imperial court, the folk activities of the Han Dynasty moved from the traditional La Ri and La Ri to the "Zhengri" on the first day of the first month. Mao Cui's "Four-person Moon Order" in the Eastern Han Dynasty recorded the sacrificial ceremonies and celebrations of the people in the Eastern Han Dynasty. First of all, offering sacrifices to ancestors and respecting elders are the main contents of etiquette in Han Dynasty. The whole family, big or small, sat in front of the ancestral tablet in hierarchical order, and the family toasted their parents in turn with joy. Secondly, pay tribute to the people and relatives of the township party. After the celebration ceremony of Japanese family sacrifices, people went out to pay tribute to their relatives and neighbors. ...