偷梁换柱 (tōu liáng huàn zhù) — to commit fraud by secretly substituting something inferior or fake for the genuine article; to pull a bait-and-switch

Definition

A chengyu for secretly swapping the real thing with a fake or inferior one — a deliberate bait-and-switch done to deceive. Used to denounce fraud, substitutions, or underhanded tactics.

idiom
to commit fraud by secretly substituting something inferior or fake for the genuine articleto pull a bait-and-switch

Examples

  • 偷梁换柱，。
    Nà jiā gōng sī yòng tōu liáng huàn zhù de shǒu fǎ qī piàn gù kè, bǎ liè zhì chǎn pǐn dāng míng pái mài.
    That company used a bait-and-switch tactic to deceive customers, selling inferior products as if they were name brands.
  • ，偷梁换柱。
    Tā tōu tōu bǎ zhēn huà huàn chéng jiǎ huà, zhè zhǒng tōu liáng huàn zhù de xíng wéi zuì zhōng bèi fā xiàn le.
    He secretly replaced the real painting with a fake, and this fraudulent substitution was eventually discovered.
  • 偷梁换柱，，。
    Bǐ sài zhōng yǒu xuǎn shǒu tōu liáng huàn zhù, yòng tì shēn dài tì zì jǐ shàng chǎng, jié guǒ bèi qǔ xiāo le zī gé.
    During the competition, a contestant pulled a switcheroo by using a substitute to take their place, and as a result was disqualified.

Origin

Compound word
构词法gòucífǎ
联合liánhéSide by side

Two parts of equal weight, alike or opposite in meaning, standing side by side.

偷梁steal the beam
偷tōusteal梁liángbeam
动宾Verb + object
换柱swap the pillar
换huànswap柱zhùpillar
动宾Verb + object

偷 means steal, 梁 beam, 换 swap, 柱 pillar; stealing the beam and swapping the pillar suggests secretly replacing the real thing.

Characters in this word

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

Meaning part形符xíngfú
亻Written in full as人rén
Sound part声符shēngfú
俞
俞yú偷tōu
The sound has drifted apartThe sound part was a clue two thousand years ago — it often still helps, but not always.

The left part 亻, a standing person, points to the idea of someone doing the act, while the right part 俞 gives the character its sound.

Open 偷 →

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

Meaning part形符xíngfú
水水shuǐwater
木木mùwood
Sound part声符shēngfú
刅
刅chuāng梁Liáng
The sound has drifted apartThe sound part was a clue two thousand years ago — it often still helps, but not always.

梁 pairs 水 (water) and 木 (wood) to show a bridge, with 刅 giving the sound.

Open 梁 →

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

This origin belongs to the traditional form 換; 换 is its simplified writing.

Meaning part形符xíngfú
手手shǒuhand
Sound part声符shēngfú
奐
奐huàn換huàn
Same sound today

For the traditional form 換, 手 is the hand part and 奐 gives the sound; this note is about 換, not the simplified 换.

Open 换 →

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

Meaning part形符xíngfú
木木mùwood
Sound part声符shēngfú
主
主zhǔ柱zhù
Same sound today

The left part 木 shows that 柱 is connected with wood. The right part 主 gives the pronunciation.

Open 柱 →

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