The shang (Tibetan: gchang) is a flat ritual upturne handbell employed by Bönpo and Asian shamans. The sizes of the shang range from approximately 3 to 20 inches in diameter. It is traditionally held to have originated in Zhangzhung and is symbolically similar to the tantric dril-bhu. Shang are traditionally consecrated and made of sophisticated metallic alloy. The Bönpo or shaman may use this instrument as a tool to 'caste' or 'throw' thoughts. The shang may also be used to receive information from the æther.