The Zheng, commonly known as Guzheng, is a plucked string instrument that is part of the zither family. It is one of the most ancient Chinese musical instruments according to the documents written in the Qin dynasty (before 206 BC)was prevailed in Sui Dynasty. Zheng came down to nationwide as well as some other Asia countries according to historical changes. Zheng came into being different styles and genres through long-term historical revolution, such as Henan Zheng茫鈧丼handong Zheng茫鈧丆haozhou Zheng and Kejia Zheng and the like.
Zheng is the forerunner of Japanese koto, Korean kayagum, Mongolian yatag, and Vietnamese dan tranh. Due to its long history, the zheng has been called guzheng or Gu-Zheng where "Gu" stands for "ancient" in Chinese. The guzheng has been a popular instrument since ancient times and is considered as one of the main chamber as well as solo instruments of Chinese traditional music. Since the mid-19th century, guzheng solo repertoire has been growing and evolving towards an increasing technical complexity. Guzheng is build with a special wooden sound body with strings arched across movable bridges along the length of the instrument for the purpose of tuning. In the early times the zheng had 5 strings, later on developed into 12 to 13 strings in the Tang Dynasty (618 - 907AD) and 16 strings in the Song and Ming dynasty (from the 10th to 15th century). The present day zheng usually has 21-25 strings.