cāng ying bù dīng wú fèng dàn
lit. flies do not attack an intact egg (idiom)
fig. no smoke without a fire
苍
cāng
dark blue
蝇
ying
fly
不
bù
no; not so
叮
dīng
to sting or bite (of mosquito, bee etc)
无
wú
not to have
缝
fèng
seam
蛋
dàn
variant of 蜑[Dan4]
