Music connection. Guqin, also known as Yaoqin, Yuqin and Lyre, is a traditional Chinese plucked string instrument with a history of more than 3,000 years. Its relationship is music. Guqin has a wide range of sound, a deep tone and a long lasting sound. The surface of the piano has seven strings from thick to thin from outside to inside. In ancient times, the strings were made of silk, but today they are mostly made of steel strings.