"The zheng or guzheng, also known as a Chinese zither, is a Chinese plucked string instrument with a more than 2,500-year history. The modern guzheng commonly has 21 strings, is 64 inches long, and is tuned in a major pentatonic scale. It has a large, resonant soundboard made from Paulownia. Other components are often made from other woods for structural or decorative reasons. Guzheng players often wear fingerpicks made from materials such as plastic, resin, tortoiseshell, or ivory on one or both hands." --WikipediaGuzheng strings are typically made of steel core wound with silk, copper and nylon.