Extract 300 words from relevant materials adjacent to Tomb-Sweeping Day.

Qingming is one of the 24 solar terms in China. Because the 24 solar terms objectively reflect the changes of temperature, rainfall and phenology throughout the year, ancient working people used them to arrange agricultural activities. However, Qingming, as a festival, is different from pure solar terms. Solar terms are symbols of phenological changes and seasonal order in China, while festivals contain certain customs and activities, which have certain commemorative significance.

Tomb-Sweeping Day is a traditional festival in China, and it is also the most important festival to worship ancestors and sweep graves. Grave-sweeping is commonly known as going to the grave and offering sacrifices to the dead. Most Han people and some ethnic minorities visit graves in Tomb-Sweeping Day.

According to the old custom, when sweeping graves, people should bring food, wine, fruit, paper money and other items to the cemetery, offer food to the graves of their loved ones, then burn the paper money, cultivate new soil for the graves, break some green branches and insert them in front of the graves, then kowtow and worship, and finally go home after eating and drinking. The poem Qingming written by Du Mu, a poet in the Tang Dynasty, said: "There are many rains during the Qingming period, and pedestrians on the road want to break their souls. Ask local people where to buy wine? The shepherd boy pointed to Xinghua Village. " Write about the special atmosphere in Tomb-Sweeping Day.

Tomb-Sweeping Day, also known as the outing festival, according to the solar calendar, between April 4th and 6th every year, it is the season of beautiful spring and lush vegetation, and it is also a good time for people to have a spring outing (called outing in ancient times), so the ancients had the custom of going for an outing in Qingming and carrying out a series of sports activities.

To this day, the custom of worshipping ancestors and mourning the dead relatives in Tomb-Sweeping Day is still very popular.