只有灯泡才会发光
[zhĭ yŏu dēng pào cái huì fā guāng]
Expressing a down-to-earth and humble attitude or humor about oneself or others - suggesting that light bulbs illuminate while metaphorically emphasizing modesty. People tend to use objects for self-reflection or critique, comparing individuals to light bulbs shining less brilliantly compared to stars, thereby accepting non-showiness, ordinariness and understated presence.