

The guzheng became prominent during the Qin dynasty (221–206 BCE). The oldest specimen yet discovered held 13 strings and was dated to possibly during the Warring States period (475–221 BCE). The guzheng has gone through many changes during its long history. The guzheng should not be confused with the guqin, a Chinese zither with seven strings played without moveable bridges. The guzheng is ancestral to several other Asian zithers such as the Japanese koto, the Korean gayageum and ajaeng, Mongolian yatga, the Vietnamese đàn tranh, the Sundanese kacapi, and the Kazakhstan jetigen. The strings' order from the inside to the outside is 1 to 21. The high-pitched strings of the guzheng are close to the player, and the low-pitched strings are on the opposite side. Now, the most common guzheng is 21 strings guzheng.

There are nylon steel strings, steel strings, silk strings, etc., depending on the genre. Guzheng players often wear a fingerpick made from materials such as plastic, resin, tortoiseshell, or ivory on one or both hands. Other components are often made from other woods for structural or decorative reasons. It has a large, resonant soundboard made from Paulownia wood. The modern guzheng commonly has 21, 25, or 26 strings, is 64 inches (1.6 m 5.3 ft) long, and is tuned in a major pentatonic scale. 'ancient zheng'), is a Chinese plucked zither. The zheng ( pinyin: zhēng Wade–Giles: cheng) or gu zheng ( Chinese: 古筝 pinyin: gǔzhēng lit.
