Zuòshēngyì yào jiǎng chéngxìn, bùnéng gǎo kēngméngguǎipiàn nà yī tào.
In business you must be honest — you can't go in for swindling and cheating.
Tips
memory
Each character names a scam tactic: 坑 (to entrap), 蒙 (to deceive), 拐 (to abduct/lure away), 骗 (to swindle). Stringing all four together makes it a catch-all for criminal trickery.
register
Strongly negative, informal — used in everyday speech and news headlines about fraud. Often paired with 偷鸡摸狗 to denounce all kinds of shady behavior.
