King Xuan of Qi loved music — specifically, the sound of three hundred yu players performing together. He maintained an orchestra of three hundred musicians, all playing in magnificent unison.
A man named Nanguo, who could not play a single note, heard about this and applied to join. He was accepted. For years, he sat among the three hundred, moving his fingers with the others, producing no sound that anyone could distinguish from the rest. He received the same salary, the same food, the same honor.
Then King Xuan died. His son, King Min, inherited the throne. But King Min had a different taste: he preferred solo performances. He ordered each musician to play alone, one by one, for his personal enjoyment.
Nanguo packed his bags and fled that very night.
齐宣王使人吹竽，必三百人。南郭处士请为王吹竽，宣王说之，廪食以数百人。宣王死，湣王立，好一一听之，处士逃。
齐宣王使人吹竽，必三百人。南郭处士请为王吹竽，宣王说之，廪食以数百人。宣王死，湣王立，好一一听之，处士逃。
Reflection & Analysis · 寓意解读
Core Wisdom
You can hide among the crowd for a while, but when each person is tested individually, only true skill survives.
Han Feizi used this story to illustrate the danger of unexamined officials. King Xuan's orchestra was a system designed for collective performance — which is precisely what made Nanguo's fraud possible. King Min's solo requirement was a system designed to expose individual competence.
The idiom "滥竽充数" (filling the orchestra with a yu you can't play) describes anyone who holds a position they are not qualified for. The story asks a systemic question: are your institutions designed to hide incompetence, or to reveal it?