150 words on the origin of Qingming Festival

The Origin of Qingming Festival:

During the Spring and Autumn Period and the Warring States Period, among the Five Hegemons of the Spring and Autumn Period, one of them was called Duke Wen of Jin, also known as Chong'er, who was forced to embark on the road of fleeing from the country when he was 41 years old because of the dispute over the throne. When he was 41 years old, he was forced to flee the country because of a dispute over the throne. Among his entourage, there was a courtier named Jie Zi Tui, who, when he saw Chong Er's tired face, secretly cut a piece of meat from his thigh and made a bowl of broth for him to drink, which touched Chong Er very much. Later, when Chong Er ascended to the throne, in order to find Jie Zi Pui, he did a silly thing - set fire to a mountain, but he didn't expect to burn Jie Zi Pui and his mother to death. After that, in order to commemorate Jie Zi Pui, Duke Wen of Jin designated that day as "Cold Food Festival", which is now known as Qingming Festival.

Expanded:

Qingming Festival: Also known as the Treading Green Festival, it is celebrated at the intersection of mid-spring and late spring, on the 104th day after the winter solstice. It is a traditional Chinese festival that began around the Zhou Dynasty and has a history of more than 2,500 years.

Till now people have many customs to honor it. For example: banning fires, sweeping tombs, trekking, swinging, playing cuju, playing polo, etc... This is a day of ancestor worship and tomb-sweeping, and then this day people mourn the dead and miss the dead. Kite flying is to fly kites into the blue sky, then cut the strings and let the wind send them to the ends of the earth, which is said to get rid of diseases and bring good luck to oneself.

As for swinging, kicking cuju, playing polo this series of customary sports activities, is because the cold food festival to cold food ban fire, in order to prevent cold food cold food injury, so people come to participate in a number of sports activities, in order to exercise the body.