"Steal the beams and replace the pillars" literally means secretly swapping the beams and pillars of a house. It is a metaphor for using deceptive means to secretly alter the key parts of something in order to confuse, substitute, or tamper with it. This idiom originates from the twenty-fifth stratagem in The Thirty-Six Stratagems. It originally referred to weakening an opponent in military affairs by secretly replacing the enemy's main force or key figures, and later came to be widely used in daily life, business, politics, and other fields. It is mostly used in a derogatory sense to describe dishonest covert operations, such as swapping contracts, tampering with data, or assuming someone else's identity. Its deeper meaning emphasizes the concealment of "stealing" and the crucial nature of "replacing," that is, substituting something inferior or false for something superior or genuine without being noticed. In emotional coloring, it carries a strong sense of condemnation and warning, reminding people to guard against substantive changes beneath an appearance of consistency. In terms of cultural background, it reflects the idea of deception in ancient military wisdom, but in modern moral discourse it is often regarded as an unethical or illegal means.
📝 Example
1. This renovation company pulled a bait-and-switch, substituting the brand-name building materials specified in the contract with inferior ones, which the homeowner only discovered upon inspection. (Here it refers to secretly replacing key materials with shoddy substitutes.)
2. He pulled a bait-and-switch in his paper, disguising someone else's experimental data as his own results, and was ultimately caught by the plagiarism detection system. (Here it refers to secretly tampering with core content in an attempt to slip through.)