1, Tomb-Sweeping Day, is the most solemn ancestor worship festival of the Chinese nation, which belongs to a traditional cultural festival of ancestor worship and pursuing the future with caution. Tomb-Sweeping Day embodies the national spirit, inherits the sacrificial culture of Chinese civilization, and expresses people's moral feelings of respecting and honoring their ancestors. Tomb-Sweeping Day has a long history, which originated from the ancient Spring Festival.

2. The establishment of the ancient branch calendar provides decisive conditions for the formation of festivals, and ancestral beliefs and sacrificial culture are important factors in the formation of ancestral rituals and customs in Qingming. According to the research results of modern anthropology and archaeology, the two most primitive beliefs of human beings are the belief in heaven and earth and the belief in ancestors. Tomb-Sweeping Day Qi's characteristics, ancestral beliefs and sacrificial culture evolved into Tomb-Sweeping Day and became a fixed custom.

Tomb-Sweeping Day is a special festival among the 24 solar terms, which indicates the change of seasons. At this time, it is a good time to go for an outing (spring outing) and clear the field (grave-sweeping sacrifice) in the suburbs, bid farewell to the old and welcome the new, the temperature rises, and everything is clean and tidy.