The origin of Tomb-Sweeping Day is 150.

Tomb-Sweeping Day has a long history, which originated from the ancient Spring Festival. The establishment of ancient branch calendars provided decisive conditions for festivals, and ancestral beliefs and sacrificial culture were important factors in the formation of Tomb-Sweeping Day.

Qingming has two connotations: solar terms and festivals. Tomb-Sweeping Day Qi provided important conditions for the formation of Tomb-Sweeping Day customs in terms of time and meteorological phenology. Tomb-Sweeping Day is one of the 24 solar terms in the ancient calendar of China, which reflects the seasonal changes. At this time, it is a good time for an outing in the suburbs (spring outing) and Qingming (grave-sweeping sacrifice). Tomb-Sweeping Day's combination of solar terms and folk customs is the unity of climate, geography and human harmony.