Is Tomb-Sweeping Day a festival for the dead or a festival for the living?

What the living do is to remember and mourn the old friends, and people can't forget their roots.

Qingming is the 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.