Why is Tomb-Sweeping Day also called Cold Food Festival?

The reason why Tomb-Sweeping Day is called Cold Food Festival is that Tomb-Sweeping Day is a very important solar term. As soon as Tomb-Sweeping Day arrives, the temperature rises, which is a good time for spring ploughing and planting. Therefore, it is said that "before and after the Qingming Festival, we planted melons and beans". 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 a custom of Qingming. Tomb-Sweeping Day, don't move fireworks, just eat cold food.

In the Tang Dynasty, people designated the grave-sweeping day as the Cold Food Festival, because the correct day of the Cold Food Festival was from winter to the future 105, so it happened around Tomb-Sweeping Day, so people merged Qingming Festival and Cold Food Festival into one day.

In most parts of Shanxi, the day before Tomb-Sweeping Day was the Cold Food Festival. Tomb-Sweeping Day in Yushe County and other places celebrated the Cold Food Festival two days ago; Yuanqu County also pays attention to Tomb-Sweeping Day's Cold Food Festival the day before, and the light cold food the day before.