苍蝇不叮无缝蛋 (蒼蠅不叮無縫蛋) cāngying bù dīng wúfèng dàn

cāngying bù dīng wúfèng dàn phrase flies do not attack an intact egg; no smoke without a fire
Domain: Proverb 谚语
Notes: (CC-CEDICT '蒼蠅不叮無縫蛋')