+7 = 11

ˇ

ˇyǔ
  1. 說文解字》:。」
  2. 書經》:鞀鼓柷敔。」
percussion instrument shaped as a hollow wooden tiger, with serrated strip across the back, across which one runs a drumstick
Schraptiger (Yu, Musikinstrument der chin. Antike)​ (S, Mus)​