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Traditionally it was believed that the Bönpo or shaman may use this instrument as a tool to "cast" or "throw" Tulpa. The shang was also believed to be useful in receiving information from the æther, to induce trance or call spirits.
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.
- Jansen, Eva Rudy (1990). Singing Bowls: a practical handbook of instruction and use. Holland: Binkey Kok Publications. ISBN 90-74597-01-7
- Müller-Ebeling, Claudia and Christian Rätsch and Surendra Bahadur Shahi (2002). Shamanism and Tantra in the Himalayas. Translated by Annabel Lee. Rochester, Vt.: Inner Traditions.