The zheng () or gu zheng (), is a Chinese plucked zither. The modern guzheng commonly has 21, 25, or 26 strings, is long, and is tuned in a major pentatonic scale. It has a large, resonant soundboard made from Paulownia wood. Other components are often made from other woods for structural or decorative reasons. Guzheng players often wear fingerpick made from materials such as plastic, resin, tortoiseshell, or ivory on one or both hands. Strings There are nylon steel strings, steel strings, silk strings, etc., depending on the genre. Now, the most common guzheng is 21 strings guzheng. The high-pitched strings of the guzheng are close to the player, and the low-pitched strings are on the opposite side. The strings' order from the inside to the outside is 1 to 21. 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 guzheng should not be confused with the guqin, a Chinese zither with seven strings played without moveable bridges. The guzheng has gone through many changes during its long history. The oldest specimen yet discovered held 13 strings and was dated to possibly during the Warring States period (475–221 BCE). The guzheng became prominent during the Qin dynasty (221–206 BCE). By the Tang Dynasty (618–907 CE), the guzheng was perhaps the most commonly played instrument in China. The guzheng is played throughout all of China with a variety of different techniques, depending on the region of China and the time period. It has a light timbre, broad range, rich performance skills, and strong expressive power, and it has been deeply loved by many Chinese people throughout history. Origin The guzheng has various accounts for its origin. An early guzheng-like instrument is said to have been invented by Meng Tian, a general of the Qin dynasty (221–206 BCE), largely influenced by the se. Some believe the guzheng was originally developed as a bamboo-tube zither as recorded in the Shuowen Jiezi, which was later redesigned to be more like the se and made from larger curved wooden boards and movable bridges. A third legend says the guzheng came about when two people fought over a 25-string se. They broke it in half, one person receiving a 12-string part and another the 13-string part. Strings were once made of