沒有規矩，不成方圓

mei2 you3 gui1 ju5 , bu4 cheng2 fang1 yuan2

without rules, nothing can be done (idiom); one must follow some rules

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沒有規矩，不成方圓|没有规矩，不成方圆 [méi yǒu guī ju , bù chéng fāng yuán] ► without rules, nothing can be done (idiom); one must follow some rules