南辕北辙 (南轅北轍) nán yuán běi zhé

nán yuán běi zhé set phrase south carriage shaft, north track; to act in a way that defeats one's purpose
Domain: Idiom 成语
Notes: (CC-CEDICT '南轅北轍'; CCI '南辕北辙', pp. 88-89; Guoyu '南轅北轍')