+5 = 9 

ㄔㄨˋchù

  1. 樂器木製打擊樂器演奏敲擊表示音樂開始爾雅·》:所以。」·郭璞·尺八左右。」

+5 = 9 

ㄓㄨˋ​zhù
又音

  1. )​

percussion instrument, a tapering wooden box struck on the inside with a wooden stick
Schlagkasten (chin. Schlaginstrument)​ (S, Mus)​