Kotowaza of the day: Finding value in the dull thud

Japanese:

空樽は音が高い

Romanized:

Akidaru wa oto ga takai

Meaning of Japanese:

An empty cask/barrel makes a loud sound

English equivalent:

Empty vessels make the most noise
The worst wheel always creaks most

Related kotowaza:

能ある鷹は爪を隠す