Who knows the rules of sumo?

During the competition, athletes can grab each other's belts, hold their heads, necks, trunks and limbs, trip with their legs, and pat each other's chest, but they are not allowed to kick each other's chest and abdomen, grab each other's crotch and genitals, scratch each other's hair, hit each other's ears, and jam each other's throat. They are not allowed to hurt each other's eyes and stomach, and they are not allowed to hit people with their fists or use anti-joint movements.

In the competition, it is a victory to make any part of the opponent's body touch the ground (except two soles). It is also a victory to make any part of the opponent's body (including hands and feet) touch the ground and go out of bounds. The game has no time limit. If both sides are exhausted after a long fight, the referee can suspend the game and restart the game after a break until the winner is decided.