What does a string mean?

"Silk" and "bamboo" are two categories in the classification of eight-tone musical instruments in Zhou Dynasty. Silk refers to playing stringed instruments and bamboo refers to bamboo wind instruments. Silk and bamboo music refers to the ensemble of bamboo wind instruments and stringed instruments, with meticulous playing style and beautiful artistic conception. Sizhu, also known as orchestral string, as a form of performance, has been the combination of Sizhu band and Sizhu music since Wei and Jin Dynasties.