How can there be Chinese music for piano? The piano is a western instrument. Not only that. It is also an instrument that does not fit well with other musical traditions, like the chinese one.Or do you mean a Chinese composing western music?
Are you interested in Chinese folksongs? I have a book which have 25 favourites with piano accompaniment. The songs also includes songs from China's Kazak, Uygur & Mongolian minorities.
I define music by the based on musical criteria. Not on passports of lines on maps. If there is such a thing as Chinese music then it is music that fits within the culture of music, defined on the grounds of musical technical criteria, that developed in China.I don't think that using a Chinese melody in western music turns the music into Chinese music.