The book drum (pinyin: shū gǔ) is one of the traditional Han Chinese musical instruments. Popular all over the country, it is specially used for the accompaniment of various drum books such as the rap music "Dagushu" in northern China. When playing, the book drum is placed on a drum stand, and the drum stand is made of six thin bamboos tied with ropes. The drum surface is slightly lower than the elbow, or the book drum is supported on a small wooden frame. The rapper holds a book board or pear flower slice in his left hand, and a single arrow in his right hand strikes the drum surface.