I need to work those days so i can’t go hiking but last december i went to kanding, taogong, amigomba, litang. The tibetan part of sichuan… and i loved it. The air is pure and you are able to enjoy the sun.
You will not be able to hike anything because it is so high that you get tired and dizzy really easy. BUT the views are really nice.
Nothing compared to this kind of “chinese hikings” like qingshengshan.