The thinnest string of a guzheng string is the 1st string, and it goes all the way up to the 2nd string, the 3rd string, etc., until the thickest one is the 21st string. Guzheng has 21 strings, including four colored strings, which are used as marks to help you find the position of the strings.

The guzheng is a plucked musical instrument, which is made by plucking the strings with the fingers to cause the vibration of the strings to produce sound. The vibrating strings transmit the vibration to the panel of the resonance box through the bridge (goose post) and the sound post. The vibration of the panel then causes the air in the resonance box cavity to vibrate, and then the vibration and reflection of the bottom plate strengthens the vibration of the air in the cavity and the panel. . The sound of the guzheng, which has been amplified by multiple vibrations, is the music that everyone hears from the sound hole of the bottom plate.

The guzheng itself is made of wooden boards, the panels are generally made of sycamore wood, and the head of the zheng is preferably hollowed out from red sandalwood. For the string part, the traditional 13-string Dazheng mostly uses silk strings; the 16-string zheng mostly uses stainless steel strings. The bass part also uses steel wire wrapped with copper wire; as for the twenty-one zither, it uses stainless steel wrapped nylon strings.

Guzheng has beautiful timbre, wide range, rich performance skills and strong expressiveness, so it is deeply loved by the masses. "Beizheng" (Henan Zheng and Shandong Zheng). The northern part of China's zheng is represented by the Henan and Shandong schools, and the southern part is mainly represented by the Taiwanese zheng school.