郑人买履 / 鄭人買履
zhèng rén mǎi lǚ
Meaning
- the person from Zheng 郑 Zhèng who wanted to buy shoes (an allusion to an ancient story about somebody who, when buying a pair of shoes, preferred to rely on their foot measurements rather than just trying them on) (idiom)
- disregarding the sensible approach in favor of adherence to a fixed idea