"A three-person rumor can create a tiger" comes from Strategies of the Warring States, Wei Strategies II. It tells how Pang Cong warned the King of Wei: if one person said there was a tiger in the marketplace, the king would not believe it; if two people said so, the king would waver; if three people said so, the king would take it as true. It is a metaphor meaning that rumors or false reports, repeated by many people, can make others believe them to be true. This idiom emphasizes the terrifying power of public opinion and the danger of credulity, and is often used to remind people not to follow rumors blindly but to think independently and verify the truth. In the contemporary era of information explosion, it carries even greater cautionary significance: online rumors and fake news often "become a tiger" through forwarding, causing panic or misleading the public. Its emotional coloring is generally derogatory, often carrying a sense of criticism and warning. In use, it often serves as a predicate or attributive, as in "A three-person rumor can create a tiger; many mouths can melt metal." In terms of cultural background, it reflects the ancient awe of the power of speech and also embodies the rational spirit of Confucian "examining what is transmitted."
📝 Example
1. Negative news about a certain celebrity is spreading like wildfire online, but it's really just "three men make a tiger"—there's no solid evidence at all. (Refers to rumors being believed true after being repeated by many people.)
2. Don't just believe everything you hear. Don't you understand the principle of "three men make a tiger"? You should investigate for yourself before drawing conclusions. (Refers to not readily believing rumors that are repeatedly spread.)