Chinese instruments usually refer to the traditional folk instruments in China. They are mainly divided into four categories, namely wind instruments, plucked instruments, percussion instruments and string instruments. They are made with exquisite workmanship and beautiful melodies. In China, a land of ceremony and decorum, music has played an important role in personality development, cultural life and national etiquette from ancient times. Appreciation of the performance of instruments, such as Zheng (a Chinese zither with 21 or 25 strings) and Erhu (a two-stringed bowed instrument), can help understand Chinese culture.