Chinese music … Gu zheng Lesson Gu Zheng is one of the most ancient Chinese musical instrument. It 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. The sound of Gu Zheng is soft, delicate and beautiful, which allows the player to express the feeling and emotion. Learning Gu Zheng can let the children understand the Chinese folk music and related cultural knowledge.