Collect a short passage describing traditional festivals in China.

Qingming is one of the 24 solar terms in China. According to the solar calendar, every year between April 4th and 6th. The ancients attached great importance to this solar term. As a solar term, Qingming is in most parts of China. The winter with withered trees has passed, the weather is fine, the flowers are long, and the willow is green, so it is called Qingming. First of all, this solar term is closely related to agricultural production. The agricultural proverb says "before and after Qingming Festival, point melons and plant beans", which is a good season for spring ploughing and sowing. Secondly, Qingming is also a day to worship ancestors and sweep graves. Du Muyou, a poet in the Tang Dynasty, said in a poem: "There are many rains during the Qingming Festival, 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. 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.