About the origin of Tomb-Sweeping Day, not too long, just a hundred words. Write out the cause, process and result of the story! !

According to legend, during the Spring and Autumn Period, Zhong Er, the son of the Jin Dynasty, went into exile to escape persecution. On the way to exile, he was tired and hungry, and he couldn't stand up anymore. After looking for it for a long time, the minister couldn't find anything to eat. Minister meson pushed him to a secluded place, cut a piece of meat from his thigh and cooked a bowl of broth for childe to drink. Zhong Er gradually recovered his spirit.

Nineteen years later, Zhong Er became the monarch. After he ascended the throne, Wen Gong rewarded the heroes who accompanied him in exile at first, but forgot to push the meson. Many people complained about meson push and advised him to admire it. However, mesons despise those who strive for merit the most. Hearing this, Jin Wengong was ashamed and personally took someone to ask Jiexiu, but Jiexiu had left home for Mianshan.

In order to produce meson push, Mianshan was burned. After the fire was put out, people found that Jiezitui, who was carrying his old mother, had sat under an old willow tree and died. In order to commemorate meson push, Jin Wengong ordered that this day be designated as "Cold Food Festival". The following year, Jin Wengong led ministers to climb mountains to pay homage. He found that the old willow was dead and resurrected, so he gave it the title of "Qingming Willow" and told the world, so he named the day after the Cold Food Festival "Tomb-Sweeping Day".