[the look is for nothing!!]

Oh. . . right. [his features do fall as he is reminded of Yingying's frail constitution, but they perk up again pretty quickly] . . . I actually offered her the use of my wish for that. I don't know if she'll take it, but it's not like I have any need for it, you know?

[and it feels right, for someone without any wishes of his own, to give his away to the wishing fairy herself]