It is an idiom that three men hit a tiger, which originated from Wei Ce-er, the policy of the Warring States Period. This idiom means that more people can make people take rumors as facts. It is derogatory, usually a clause. In practical application, many people misunderstand it as "joint force", which is wrong.
Idiom allusion: During the Warring States Period, Pang Cong, Minister of Wei, accompanied the Prince to Zhao as a hostage. Before he left, he said to Wang Wei, "Now someone says there are tigers in the market. Do you believe him? " Wang Wei replied, "I don't believe it." Pang Cong asked again: "If two people say that there are tigers on the market, will your majesty believe it?" Wang Wei said: "I will have some doubts."
Pang Cong went on to say, "If a third person said there were tigers in the market, would your majesty believe it?" Wang Wei replied: "Of course I will believe it." Pang Cong said: "Obviously, there will be no tigers in the market at all, but after the spread of three people, it seems that there really are tigers in the market." Today, the distance between Handan, the capital of Zhao, and the girder of Wei is much farther than the distance between the palace and the market.
More than three people criticized me. I hope your majesty can see through everything. "Wang Wei said," I know this, so you can rest assured! "Sure enough, Pang Cong had just left with the prince when someone framed him in front of Wang Wei. At first, Wang Wei would defend Pang Cong. Many people framed him, but Wang Wei actually believed him. After Pang Cong and the Prince returned to China, Wang Wei never summoned him again.
Idiom implication
A lie repeated a thousand times will be regarded as truth. There are no tigers in the street, which is beyond doubt. It is only because people say so that it becomes a real thing. Idiom fables tell us that in real life, we should not believe in rumors, let alone spread rumors, but be good at analyzing them from complex social discussions.
Think carefully and always keep a clear head. Only in this way can we make fewer mistakes or even no mistakes. The use frequency of "three people become tigers" is not high, and some people may not be familiar with it. There is an idiom with a similar meaning, "once participated in killing people", and more people may know it.