Do I have to be able to play Nanniwan to get piano level 10?

That's right. After inquiry, Nanniwan piano music is divided into two grades, five grades and seven grades, so you need to be able to play Nanniwan to get the tenth grade of piano. Piano, a keyboard instrument in western classical music, has the reputation of "the king of musical instruments". It consists of 88 keys (52 white keys and 36 black keys) and a metal chord board.