What is traditional Chinese vocal music

Shenzhen span vocal music for you to answer:

The so-called Chinese traditional vocal music is our country in the 40s and 50s to Wang Kun Guo Lanying as the representative of the national singing, singing, absorbing the essence of the opera singing and local original folk singing characteristics, ancient times there is also a sound of the singer's Chen Zan, prevalent in the dynasty and the countryside, but there is no formation of specific concepts of singing, unlike the American vocal singing method with its The complete theory!