沒有規矩，何以成方圓 [没－规－－－－－－圆]

Jyutping mut6 jau5 kwai1 geoi2 , ho4 ji5 sing4 fong1 jyun4
Pinyin méi yǒu guī ju , hé yǐ chéng fāng yuán

Definitions (CC-CEDICT)
  1. without rules, how can anything be done (idiom); one must follow some rules