Not Cai Danzhuoma, 1937 was born in Shigatse, Tibet in August, a famous soprano in China, a national first-class actress and a non-violinist. The violin is a stringed instrument. There are always four strings. The friction between the strings and the bow produces vibration, and then the vibration is transmitted to the back plate through the sound column in the * * * sound box, and the * * * vibration generated by these components gives out a harmonious and bright piano sound.