The earliest way to write the word "Nian" is that a person bears the image of ripe grain, which means that the crops are ripe, that is, "Nian Cheng". In ancient times, the so-called "annual achievement" refers to this. Therefore, ancient calligraphy books put the word "year" in the grain department.

Because cereal crops are usually ripe at one year old, the date number of "year" and "year" has the same cycle. In ancient times, both the Central Plains and Tibetans celebrated the New Year, and later it became New Year's Eve (or "Chinese New Year").

Extended data:

The word "Oracle Bone Inscriptions" is engraved with the shape of a person carrying grain, which means harvesting crops. Probably because harvesting is a major event in the middle of an agricultural society, in ancient times, crops were harvested once a year, so "Year" was used as the anniversary year.

Notes on the original meaning of "nian" in Shuo Wen Jie Zi.

New Year's Eve is a celebration held on Gu Shu Festival in ancient times.

The custom of Chinese characters "Nian" and "New Year" is an important cultural feature in ancient China, which is based on agriculture and the maturity of rice crops.

However, in present Chinese, the original meaning of "mature within the year" has long been lost and disappeared. China celebrates the Spring Festival at the end of the twelfth lunar month, the beginning of the first month and the end of the year. This is not the harvest season, but the season does not match the original meaning of "year"

"Nian", Oracle Bone Inscriptions and Jinwen are pictographs of mature and drooping ears of grain. The pictographic character "nian" is a symbol with mature ears of grain as its main meaning. This is the accurate definition of Chinese character "year" in graphology. In modern Chinese vocabulary, "Niancheng" still retains the meaning of "Nian".

The great discovery in the study of Shui calligraphy is the accurate explanation of the original meaning of "Year" in ancient Shui calligraphy, Shui calendar and festivals (including Libo Festival).

References:

Baidu Encyclopedia-Year