Tongqin (pinyin: Tongqin), also known as "mang tube", "tongdong", "tongdong", "big copper horn" and so on. It is a Tibetan and Mongolian wind instrument and a very important bass instrument in the Lamaist band. It is popular in lama temples in Tibet, Inner Mongolia, Qinghai, Sichuan, Gansu and other places. It has a history of more than 1,100 years in Tibetan areas.

The Tibetan language "Tongqin" means a large number. The Kang dialect area and Jiarong dialect area are called "Ladong", the Mongolian people are called "Bili" and "Biligu", and the Han people are called "Large tube" and "Changjiao". No.", "Small Copper Horn", etc.

Tongqin is played by trained lamas. When playing, one end of the trumpet is placed on the ground or on a wooden frame, and the player holds the upper end of the instrument with both hands. Tong Qin has his own repertoire. Tong Qin's tone is deep and rich, and it sounds quite solemn and majestic.

The tube body is made of copper and is made of three sockets. The top is thin and the bottom is thick, the thin end is the mouthpiece, and the thick end is in the shape of a trumpet. When playing a total length of about 300 cm, one end of the trumpet mouth is placed on the ground or a wooden frame. The player stands and holds the top of the pipe with both hands. . Can play cones, overtones and minor portamentos. The volume is huge and the tone is muffled. It feels solemn and majestic. Used in religious festivals or religious activities.