The day before Tomb-Sweeping Day was a cold food festival, and the day before was a light cold food. Which region attaches importance to it?

The origin of the Cold Food Festival is Mianshan, Jiexiu, Shanxi, with a history of 2640 years (358 years earlier than the Dragon Boat Festival). According to the definition of "Cold Food Festival" in Ci Yuan and Ci Hai, Jiexiu lived in seclusion in Mianshan, Jiexiu during the Spring and Autumn Period after suffering and assisting Zhong Er, the son of Jin Dynasty, to restore the country. Burning the mountain forced him out, but Zitui and his mother disappeared and burned us. In order to mourn him, Jin Wengong named Jiexiu after Jiexiu, changed Mianshan to Jiexiu Mountain, and ordered to ban fire and cold food on the day after the winter solstice (KLOC-0/50), forming a cold food festival.

Cold Food Festival: 105 Summer to the future, one or two days before Tomb-Sweeping Day. When the first day of the day is a holiday, smoking is forbidden and only cold food is eaten. In the development of later generations, the customs of sweeping, climbing, swinging, cuju, crochet and cockfighting were gradually increased. The Cold Food Festival lasted for more than 2,000 years and was once called the largest folk festival in China. Cold Food Festival is the only traditional festival named after food customs in China.

Before the calendar reform in Tang Ruowang in the early Qing Dynasty, Tomb-Sweeping Day was scheduled for two days after the Cold Food Festival. After the reform of the Tang family, the Cold Food Festival was held the day before Tomb-Sweeping Day. The definition of the modern twenty-four solar terms follows that of the Tang Dynasty, so the Cold Food Festival is the day before Tomb-Sweeping Day.