图穷匕见 / 圖窮匕見
tú qióng bǐ xiàn
Meaning
- the assassin's dagger, concealed in a map scroll, is suddenly revealed when the map is unrolled (referring to the attempted assassination of Ying Zheng 嬴政 Yíng Zhèng by Jing Ke 荆轲 Jīng Kē in 227 BC) (idiom)
- malicious intent suddenly becomes apparent