三個臭皮匠，頂個諸葛亮 [－个－－－－顶个诸－－]
Jyutping
saam1 go3 cau3 pei4 zoeng6 , ding2 go3 zyu1 got3 loeng6
Pinyin
sān gè chòu pí jiang , dǐng gè zhū gě liàng
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lit. three ignorant cobblers add up to a genius (idiom); fig. collective wisdom
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wisdom of the masses exceeds that of any individual