一传十，十传百 (一傳十，十傳百) yī chuán shí, shí chuán bǎi

yī chuán shí, shí chuán bǎi phrase news pass quickly from mouth to mouth; an infectious disease spreads quickly (old meaning)
Domain: Proverb 谚语
Notes: (CC-CEDICT '一傳十，十傳百')