"Tu Qiong Bi Xian" (When the Map Is Unrolled, the Dagger Is Revealed) comes from the "Zhan Guo Ce · Yan Ce San" (Strategies of the Warring States · Yan Strategies III), telling the story of Jing Ke's assassination attempt on the King of Qin: Jing Ke, under orders from Crown Prince Dan of Yan, presented the map of Dukang and the head of Fan Yuqi to the King of Qin. As the map was slowly unrolled to its very end, the dagger hidden within the scroll was suddenly revealed. Jing Ke seized the opportunity to attempt the assassination, but ultimately failed. The literal meaning of this idiom is "the map is fully unrolled, and the dagger appears," while its deeper meaning is a metaphor for a situation reaching its final stage, where hidden truths, intentions, or last reserves are completely exposed. It is often used to describe conspiracies, schemes, or long-concealed facts finally coming to light, carrying a strong sense of drama and reversal. In terms of emotional coloring, it is mostly derogatory or neutral, implying that some unknown danger or malice has been uncovered, though it can also be used for self-deprecation or jest. Its usage scenarios are broad—such as in political struggles, business negotiations, and interpersonal interactions—when one party's hidden purpose is finally revealed, this idiom can be used to describe it. In terms of cultural background, it reflects ancient Chinese people's emphasis on strategy and forbearance, as well as the causal tension between "the map's end" and "the dagger's revelation."
📝 Example
1. After three rounds of negotiations, the other party finally revealed their true colors and put forward extremely harsh acquisition terms. (A metaphor for hidden true intentions finally being exposed.)
2. At first, he pretended to be eager to help, but later his true colors were revealed — it turned out he wanted to win my trust in order to borrow money. (A metaphor for a disguise being exposed and one's true face being revealed.)