Chen Collection, Middle Volume Radical: Tree (mù) Kangxi Strokes: 11 Page 528, Entry 11 Pronounced bang. It is the name of a type of tree. Furthermore, according to the Zhengzitong (Correction of Characters), it is a wooden object hollowed out with a hole pierced in the back, placed in government offices as a signaling tool to summon people. It is also made from bamboo in a cylindrical shape, keeping the nodes at both ends, with a small hole on the side; when struck, it produces a sound similar to its ancient usage. According to the Liushugu (Origins of the Six Scripts), this character is derived from bang, implying that it produces a bang-bang sound.