CHENG, TSCHENG or TSCHIANG (Ger. Scheng), an ancient Chinese wind instrument in the nature of a primitive portable organ, containing the principle of the free reed which found appli cation in Europe in the accor dion, concertina, and harmonium.
In shape the cheng resembles a closed teapot to the top of which are fitted bamboo pipes of gradu ated lengths and furnished in the side with an insufflation tube curved like a swan's neck or the spout of a teapot.