The shang is a flat ritual upturned 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 is often used in rites in conjunction with the phurba and namkha. The shang consists of three principal parts: the flat bell part proper; the gankyil which is the centre piece that holds the knocker; and the knocker or striker proper, which is often made of animal horn.http://www.metmuseum.org/TOAH/HD/shzh/hd_shzh.htmhttp://www.china.org.cn/english/features/FbiCh/78450.htmhttp://images.google.com/imgres?imgurl=http://www.mnsu.edu/emuseum/prehistory/china/images/shang2.gif&imgrefurl=http://www.mnsu.edu/emuseum/prehistory/china/ancient_china/shang.html&h=352&w=300&sz=57&hl=en&start=1&sig2=DCVpBDL1FEUF8zBTgCFa5A&tbnid=tAJ2_5-3n_nBsM:&tbnh=120&tbnw=102&ei=m8u8Rrj_BaPEeNqXkJ8J&prev=/images%3Fq%3Dshang%2B(image)%26gbv%3D2%26svnum%3D10%26hl%3Den%26sa%3DG