1. During the Spring and Autumn Period, Zhong Er, the son of the Jin Dynasty, was exiled. He was hungry and dizzy on the road, and the minister meson pushed him to eat the meat on his thigh. Later, my son Zhong Er became Jin Wengong, and the loyal minister forgot to recommend him. When Zhong Er remembered this, Jiezitui refused to be an official again.

Zhong Er asked Yamakaji to force him to leave the mountain, but no one came out. He went up the mountain and found himself and his mother burned to death. Therefore, Zhong Er designated the day when Yamakaji was released as Cold Food Festival. The next day, Zhong Er climbed the mountain to pay homage, and found that the old willow was revived, so he named it "Qingming Willow" and Tomb-Sweeping Day.