半瓶水响叮当 (半瓶水響叮噹) bàn píng shuǐ xiǎngdīngdāng

bàn píng shuǐ xiǎngdīngdāng phrase if you tap a half-empty bottle it makes a sound; empty vessels make the most noise
Domain: Proverb 谚语
Notes: (CC-CEDICT '半瓶水響叮噹')