Although the two teams are pulling each other's ropes in this competition, they are pulling something in the middle to their own side, so it is like a river boundary that separates the two teams. In the tug-of-war competition, there will be an intermediate in the middle line, and the two sides of this middle line will separate the people on both sides like the river boundary. Only when one side pulls this thing to one side of its own river boundary can it be regarded as victory. If we look at the rules of tug-of-war, it is like pulling things to your own river boundary, which means tug-of-war. So the name of tug-of-war comes from the rules of this competition.
People in ancient times paid more attention to the river boundary. They think that people on both sides of the river don't interfere with each other, and if things reach which side, they belong to which side. Tug-of-war is exactly the same as people's consciousness, so people invented this game and connected the name of this game with their consciousness. They hoped to express their definition of the river boundary in this entertainment way, so they invented this competition and came up with this rule.
They think that the tug-of-war is now on both sides of the river, and people on both sides are working hard for their own victory. Ancient people were very industrious, but at the same time they also attached great importance to winning, so although the goods belonged to which side they went, they didn't stipulate which side the goods naturally went to, so they could do something to make them belong to them, and their little mind was just like our present competition, so people thought that this competition was tug of war.
In a word, the name of tug-of-war was decided by people according to his rules.