Which innovations is contributed by Mei Lanfang to the art of Peking Opera?

A、He composed many new melodies.;

B、He introduced facial expressions, movements and the technique of dancing to the accompaniment of singing, from Kun Opera to Peking Opera;

C、He is the first to use pipa to support jinghu accompany singing by the female role.;

D、He created various dances, such as the silk dance, sword dance, sleeve dance, and duster dance.