偷梁换柱

lit. to steal a rafter and replace it with a column / to replace the original with a fake / to perpetrate a fraud (idiom)

to steal / to pilfer / to snatch / thief / stealthily

Liang Dynasty (502-557) / Later Liang Dynasty (907-923) / surname Liang

roof beam / beam (structure) / bridge

variant of 梁[liang2]

to exchange / to change (clothes etc) / to substitute / to switch / to convert (currency)

pillar / CL:根[gen1]