"The fisherman reaps the benefit" literally means that the fisherman gains the advantage. It is a metaphor for a situation in which two parties are locked in a struggle, only to let a third party walk away with the gains. This idiom comes from the fable in Strategies of the Warring States: Yan Strategies II, "When the snipe and the clam grapple, the fisherman profits": the snipe pecks at the clam's flesh, the clam clamps the snipe's beak, and neither gives way, so in the end both are caught by the fisherman. Its deeper meaning emphasizes that in competition or conflict, if both sides remain deadlocked, they often allow an onlooker to seize the advantage. It is mostly used in business competition, political maneuvering, or everyday disputes, reminding people to guard against internal friction and avoid letting a third party benefit. In terms of cultural background, it reflects the strategic thinking in traditional Chinese wisdom of "using stillness to control movement" and "sitting on the mountain to watch the tigers fight." Its emotional tone is relatively neutral, sometimes with a derogatory shade, implying that the beneficiary gains without effort or takes advantage by opportunism, and it also warns those in conflict to weigh the pros and cons and prevent both sides from suffering losses.
📝 Example
The two companies engaged in a fierce price war to compete for market share, but as a result, an emerging enterprise took the opportunity to launch new products and profited as the fisherman from the fight, quickly capturing the market. (A metaphor for a third party benefiting from a conflict between two sides.)
The two of them openly and secretly fought for the team leader position, but in the end, Xiao Li, who was usually quiet and unobtrusive, benefited as the fisherman from the fight and got the promotion. (A metaphor for a third party unexpectedly gaining advantages from others' disputes.)