This excerpt comes from Explanation Six in Han Feizi · Inner Congeries of Sayings I. Han Fei holds rulers should confront ministers with confirmed facts. Exposing one lie creates widespread fear of the ruler’s omniscience, restraining all hidden treacherous acts.
Classic VI: Asking While Knowing the Answer (Testing with Known Facts) If a ruler asks questions while already possessing the knowledge of the truth, those who are dishonest will be exposed; if a ruler thoroughly understands one specific matter, all hidden treacheries will be transformed. The proof of this lies in Marquis Zhao clutching…