In ancient times, what was the expression of vernal equinox?

In ancient times, the vernal equinox was an activity to express reverence for nature.

1. In the Zhou Dynasty, there was a ceremony to worship the sun at the vernal equinox. Ritan is located in the east of Ritan Road in the southeast outside Chaoyangmen, also known as Asahi altar. It is the place where emperors of Ming and Qing Dynasties offered sacrifices to Daimyojin (the sun) at the vernal equinox. Asahi is set at the beginning of the vernal equinox. Every year, A, C, E, G and Ren are sacrificed by the emperor himself, and the rest are sacrificed by officials.

2. At the vernal equinox in February, we began to sweep graves to worship our ancestors, also called the Spring Festival. Before sweeping the grave, a grand ancestor worship ceremony should be held in the ancestral hall, pigs and sheep should be slaughtered, drummers should be invited to play, and the ritual students should read the eulogy and quote three praises. At the beginning of the spring equinox grave sweeping, the first thing is to sweep the graves of ancestors and distant ancestors. The whole family and the whole village have to be dispatched on a large scale, and the team often reaches hundreds or even thousands.

Vernal equinox:

1, the vernal equinox, also known as "ascending equinox", is one of the 24 solar terms and the fourth solar term in spring. The longitude of the sun reaches 0, and the festival is held on March 19-22 of the Gregorian calendar every year. The vernal equinox is of great significance in astronomy. On the day of the vernal equinox, the sun shines directly on the equator, and the northern and southern hemispheres are divided equally day and night. Since then, the direct position of the sun has continued to move from the equator to the northern hemisphere. In the northern hemisphere, the day begins to be longer than the night, while in the southern hemisphere, it is the opposite.

2. Climate has obvious characteristics. After the vernal equinox, China has entered a beautiful spring except the Qinghai-Tibet Plateau, Northeast China, Northwest China and North China.

The vernal equinox means "half". According to China's traditional calendar, 90 days between beginning of spring and Changchun are spring, and the vernal equinox just divides these three months equally, so the ancient vernal equinox is also called "vernal equinox". The arrival of the vernal equinox means that spring has passed halfway.