Tug-of-war: an antagonistic sport and entertainment in which equal numbers of people pull a thick rope to compare their strength. Some people think that the tug-of-war in ancient China was an early tug-of-war movement, which originated in the Spring and Autumn Period and the Warring States Period. At first, tug-of-war was mainly used to train soldiers' hook or resistance ability in battle, and later it was imitated by fishermen in water villages and became a folk sports and entertainment activity. After the Tang and Song Dynasties, tug-of-war gradually became popular among the people. 7/kloc-from 0/2 to 756, Emperor Xuanzong of Tang took part in a tug-of-war competition of 1000 people. Tug-of-war activities are not only circulated among the people, but also held in the palace.