The Dial exchange to return Zhao Yunlan's sight happens in the next episode, but it is pretty interesting that Shen Wei's lips are already pale. Perhaps from worrying about Zhao Yunlan and what will happen/not happen if he doesn't regain his sight.

Yes, that is such a great point! We're so used to taking his pale lips as a clue to his physical condition (because later it is!) but it's not only that. I love him being so visibly affected by something being wrong with Zhao Yunlan. ♥