Why did Tomb-Sweeping Day ban fire?

The custom of forbidding fire in Tomb-Sweeping Day originated from the Cold Food Festival. According to legend, in the Spring and Autumn Period and the Warring States Period, in order to commemorate Jiexiu, Jin Wengong ordered Mianshan to be changed to Jiexiu Mountain, and set the date of Yamakaji's return as the Cold Food Festival, stipulating that it is forbidden to set off fireworks and firecrackers on this day every year and only eat cold food, so the custom of the Cold Food Festival has been passed down to this day.

The origin of Tomb-Sweeping Day: It is said that the origin of Tomb-Sweeping Day began with the ceremony of "sweeping graves" by ancient emperors and generals, and later people followed suit and became a fixed custom of the Chinese nation to worship ancestors and sweep graves on this day. The name "Tomb-Sweeping Day" also comes from "Tomb-Sweeping Day" in the twenty-four solar terms of the China lunar calendar. 108 The day after beginning of winter is Qi's Tomb-Sweeping Day. Tomb-Sweeping Day gas * * * has 15 days. As it is Tomb-Sweeping Day, the time is after the vernal equinox. At this time, winter has gone, spring is full, the weather is sunny, the fields are bright and clean, and the vitality of nature is everywhere. It is an appropriate word to call this period "Qingming".