一瓶子不响，半瓶子晃荡
yī píng zi bù xiǎng , bàn píng zi huàng dang
lit. a full bottle makes no sound; a half-filled bottle sloshes (idiom)
fig. empty vessels make the most noise
yī píng zi bù xiǎng , bàn píng zi huàng dang
lit. a full bottle makes no sound; a half-filled bottle sloshes (idiom)
fig. empty vessels make the most noise