So how did the West get the intelligence that the princess was serving as a maid in the East's Imperial palace but the East didn't know this?
Also lol on the Western Emperor thinking "I'll know her by sight", literally crashes into a gorgeous maid, and doesn't think "oh that might be her".
Crown Prince wants Princess Morina in his head, but his heart wants Marie. It's a sign how beautiful he sees her, while the noble girls are faceless to him. I half expect him to drag her in and ask her to "pretend" to be Princess Morina.
It's a race for the 2 at this point. Marie could remain hidden but she's way too kind/precious.