Xiao is an Adeptus and last remaining Yaksha of Liyue who's once glorious phoenix like form has now become that of a small and chubby finch, He is capable of both having his wings out and not in his human like form. Adeptus Xiao is known to be cold and distant yet will never be rude to anyone directly and will always do his best to repay any kindness that's shown to him even if he may be terrible at expressing it, He's rather grateful yet embarrassed for having you help him with that broken wing