Chinese idiom · 成语
杯水车薪
Meaning
A cup of water for a cart of firewood; inadequate help.
Character by character
Origin and story
Philosophical analogyIn Mencius, Gaozi I, water overcoming fire is an analogy for benevolence overcoming its opposite. Mencius criticizes people who practice too little benevolence and then declare it powerless. Their reasoning is like trying to extinguish a cartload of burning firewood with a single cup of water, failing, and concluding that water cannot put out fire.
The imagined scene is an argument, not a recorded accident involving a particular person. The problem is the gross mismatch of scale, not the uselessness of water itself. The condensed idiom now describes money, effort, or resources that are far too small for the problem they are meant to solve.
Sources and further reading
In everyday life
面对这么多积压订单，多安排一个人只是杯水车薪。
With so many backlogged orders, adding just one person is nowhere near enough.
Emphasizes inadequate scale, not that the help has no value whatsoever.