畫公仔唔使畫出腸 (waak6 gung1 zai2 m4 sai2 waak6 ceot1 coeng2) — there is no need for any information; fully understand without thinking (lit., "when drawing a person, there is no need to draw his intestines also") in Cantonese
waakˍ₆畫gungˉ¹公zaiˊ²仔mˎ₄唔saiˊ²使waakˍ₆畫ceotˉ¹出coengˊ²腸简 画公仔唔使画出肠
Mandarin Pinyin: hua4 gong1 zai3 wu2 shi3 hua4 chu1 chang2
Meaning of 畫公仔唔使畫出腸
nounthere is no need for any information; fully understand without thinking (lit., "when drawing a person, there is no need to draw his intestines also")
noundon't have to disclose everything; there is no need to spell it out