What does Tomb-Sweeping Day mean by eating cold food?

Follow the old habit of changing fire.

Tomb-Sweeping Day is an important traditional folk festival in China, and it is one of the eight important festivals: Shangyuan, Qingming, Long Summer, Dragon Boat Festival, Central Plains, Mid-Autumn Festival, Winter Solstice and New Year's Eve. The name "Tomb-Sweeping Day" also comes from the Tomb-Sweeping Day atmosphere 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".

As soon as Qingming arrives, the temperature rises, which is a good time for spring ploughing and sowing. Therefore, there is a saying that "melons and beans are planted before and after the Qingming Festival". Agricultural proverb "Planting trees is not as clear as Qingming". Later, as the days of Qingming and cold food approached, cold food was the day when people banned fire to sweep graves. Gradually, cold food and Qingming became one, and cold food became another name of Qingming and became a custom of Qingming. On Qingming Day, there are no fireworks, only cold food.