Cold Food Festival belongs to a traditional festival that has almost been lost. Every time before Tomb-Sweeping Day, people eat cold food for one day, and every household does not turn on the stove, but only eats cold food. The next day, during the Qingming Festival, willows were inserted in front of the willow circle to show respect and nostalgia. This custom originated in the Spring and Autumn Period more than 2, years ago. It is not only a remembrance of the deceased, but also a commemoration and respect for a loyal and patriotic righteous man 2, years ago.