Gong

Gong, a Chinese instrument of percussion, made of a mixture of metals (78 to 80 parts of copper, and 22 to 20 parts of tin), and shaped into a basin-like form, flat and large, with a rim a few inches deep. The sound of the gong is produced by striking it, while hung by the rim, with a mallet, which puts the metal into an extraordinary state of vibration, and produces a loud piercing sound.