The weather in Tomb-Sweeping Day is usually around April 5th in Gregorian calendar. Tomb-Sweeping Day used to be just a solar term, but later it merged with the Cold Food Festival to produce the Tomb-Sweeping Day. Tomb-Sweeping Day is a very long festival, and there are two sayings:/kloc-8 days after 0/0 and 10 days after 0/0. These nearly 20 days belong to Tomb-Sweeping Day. Tomb-Sweeping Day, Dragon Boat Festival, Spring Festival and Mid-Autumn Festival are also called the four traditional festivals in China. From 65438 to 0935, the government of the Republic of China designated April 5th as a national statutory holiday in Tomb-Sweeping Day, also known as the National Tomb Sweeping Festival. In 2006, Tomb-Sweeping Day was included in the first batch of national intangible cultural heritage list. Tomb-Sweeping Day was listed as an intangible cultural heritage on May 20th, 2006.

Tomb-Sweeping Day, Spring Festival, Dragon Boat Festival and Mid-Autumn Festival are also called the four traditional festivals in China. Besides China, some countries and regions in the world also have Tomb-Sweeping Day, such as Viet Nam, South Korea, Malaysia and Singapore.

Tomb-Sweeping Day is a traditional major Spring Festival. It is a fine tradition of the Chinese nation since ancient times to sweep graves and remember our ancestors. It is not only conducive to promoting filial piety, awakening family memories, but also conducive to promoting the cohesion and identity of family members and even the nation. Tomb-Sweeping Day's integration of natural solar terms and humanistic customs is a combination of humanistic and natural conditions, which fully embodies the Chinese ancestors' pursuit of harmony between heaven, earth and people, pays attention to conforming to the right time, place and people, and follows the laws of nature.

Fifteen days after the vernal equinox, the bucket refers to Ding, which is Qingming. Tomb-Sweeping Day is one of the traditional solar terms in China, and it is also one of the important festivals to pursue the distance carefully and to be close to each other. From the solar terms of the natural lunar calendar, Qingming's "booking silkworm concubines and managing silkworm houses" is the time sequence coordinate of the farming society; In terms of the custom of ancestor worship and memory, Qingming is also a major festival that can best reflect "the great event of the country lies in memorial service".

Legal basis: Article 7 of the Law of People's Republic of China (PRC) on Intangible Cultural Heritage states that the cultural authorities in the State Council are responsible for the protection and preservation of intangible cultural heritage throughout the country; The competent cultural departments of local people's governments at or above the county level shall be responsible for the protection and preservation of intangible cultural heritage within their respective administrative areas.