This is a Mongolian wrestling(摔跤) sport (also called "bok") loved by the Mongolian people. Before the game, a revered elder will select the pairs of contestants and assume the role of judge. Two sides of participants will send singers to lay down a challenge. After three rounds, wrestlers make their entrance while imitating lion or eagle steps. There is no time limit in the games, nor are there limits on area, age, or weight; but the loser will not come into the ring again. Its rules state that contestants are not allowed to hold the other's leg or wrestle in a kneeling posture. Holding anywhere above the knee signifies failure. The winner will finally be declared the wrestling hero.

Besides the wonderful game itself, the costumes of the wrestlers are also a distinctive highlight. Waistcoats made from cowhide and canvas is worn that leave the arms bare. The waistcoats are decorated with copper or silver rivets and on the back characters indicate the contestant’s prowess. Around their waists they wear aprons in red, yellow, and blue colors. The trousers are mostly white with animal and flower patterns. Finally, silk fringes adorn their necks, the number of colored strips symbolizing their place in the competition

In 1209, a sports meet was held on the Oldos Grassland(鄂尔多斯草原) in what is now Inner Mongolia, in celebration of the coronation of Genghis Khan. In July 1990, or 781 years later, another wrestling competition was held with 1,024 competitors and with the bouts preceded by the same formalities and accompanied with the same folk music. However, the purpose of the recent contest was different: not in honor of an emperor, but as part of the Seventh Nadam of Xilin Gol Meng(锡林郭勒盟), one of Inner Mongolia Autonomous Region's prefectures, with the purpose of promoting sports, the competition is held when there is the best weather when dotted here and there is flocks of sheep and cattle grazing leisurely under an azure sky. It is hard to imagine the severities of winter when the pastureland will be ice-bound for almost half a year, with a temperature that drops to 40 degrees below zero and when the nomads' yurts may be buried in snow in a violent storm. Perhaps it is exactly this kind of harsh climate that has tempered the Mongolians into a hardy people and has given birth to the sport of "bok," which in the Mongolian language means "fortitude." Indeed, wrestling has been established as a centuries-old tradition among the Mongolians. It is said to have been used by Genghis Khan as a most important contest in recruiting his soldiers and promoting his officers. Today ‘bok’ is so popular among the Mongolians that competitions are held on all festive occasions --- when they receive an honored guest, celebrate a bumper harvest, pray for rainfalls, pay tributes to their ancestors, and even when they send their children to college. There are many families in which both father and sons are wrestling champions. As distinguished from other forms of wrestling --- both the Western free and Greco-Roman styles and those popular among the Han(汉族), Hui(回族), Yi, Uyghur(维吾尔族) and Tibetan nationalities in China, a ‘bok’ contest starts with a Mongolian song sung in chorus. Contestants are allowed to catch each other's jacket and waist band, but not the legs or trousers. One loses a bout when his hand or any part above the knees touches the ground. The wrestlers are not divided into weight categories. There is only competition for individuals and only one bout is fought with no time limit.