The Guzheng is a traditional Chinese instrument dating from the Qin dynasty (c. 200). It is the ancestor of the Japanese Koto as well as several other zither-like instruments found across east Asia. A modern Guzheng typically has 21 strings over movable bridges. These are mounted on a large resonant half-tube box made of wu-tong wood, and the instrument is typically about 1.63m long. The strings are tuned by both moving the bridges and by adjusting tuning pegs.
There are many techniques used in the playing of the guzheng, including basic plucking actions (right or both hands) at the right portion and pressing actions at the left portion (by the left hand to produce pitch ornamentations and vibrato) as well as tremolo (right hand). These techniques of playing the guzheng can create sounds that can evoke the sense of a cascading waterfall, thunder, horses' hooves, and even the scenic countryside. Plucking is done mainly by the right hand with four plectra (picks) attached to the fingers. Advanced players may use picks attached to the fingers of both hands.