And dance. And engage in swordplay, acrobatics, and even mime. Yes, even mime.
Why? Because the above talents must be mastered by a Chinese Opera star. Chinese Opera ain't Western Opera. Chinese Opera is a folk art, for the regular folks, who like a little swordplay and acrobatics. (Most of the people at the Met seem to be half-dead millionaires who are more interested in diamond rings than the Ring Cycle.)