Before the 1960s, there was no referee in football. 1863, football referees began to appear in Britain, but those were dispensable law enforcers who could only run outside the stadium and exercise their power by shouting, shouting and gesturing. You can imagine how such a referee achieved the desired results on such a big football field.

1875, an unexpected football match accident made the world's first referee use a whistle. It happened in a football match in London. In this game, the athletes of both sides had a dispute over whether a scoring ball was valid or not, and they beat and cursed each other. In order to support their favorite team, the audience climbed over the fence and entered the stadium, demanding severe punishment. For a time, the stadium was in chaos and the game could not be played. Coincidentally, the referee of this game is a policeman named John. He saw chaos inside and outside the stadium, and there was a great possibility of life accidents. As a result, professional habits made him take out the siren in his pocket and blow it with all his strength. The blow really worked. The rioting audience thought they had offended the police and retreated to the audience, and the order of the whole stadium soon settled down.

This unexpected harvest made people realize the warning function of whistle. Since then, referees who use whistles have appeared in football matches and soon expanded to other games.