lit. repair the plank road by day while secretly crossing the Wei River 渭河[Wei4 He2] at Chencang (idiom, refers to a stratagem used by Liu Bang 劉邦|刘邦[Liu2 Bang1] in 206 BC against Xiang Yu 項羽|项羽[Xiang4 Yu3] of Chu); fig. to feign one thing while doing another; to cheat under cover of a diversion
trad. 明修棧道,暗渡陳倉
Also written 明修棧道,暗渡陳倉【míng xiū zhàn dào , àn dù Chén cāng】