The main reason I decided to come back to this one was a funny translated line that bubbled back up to the surface a few days ago. I don't remember which episode it's in but I remember it was funny. The female lead is scolding her husband and says "You are a shameful and horny prince!".
The context as I recall it is that she tried to hypnotise herself to forget him to protect him (their marriage was political and love came later) and mistook his physical presence as a last hallucination of him that her mind gave her to say goodbye. So she took him into her bed and gave him a passionate goodbye (it was a tasteful fade to black of course).
I can't remember the specific scene but she realises he was really there and is hilariously scandalized that he was willing and happy to take his beloved wife to bed. I believe there was some political intrigue and so she quite reasonably thought he couldn't possibly really be there because he would be in danger.
So basically as much as I enjoy their love story I'm mainly re-watching the series to gain context for this scene and line.
Additionally I noticed that they must have filmed in deep winter because the poor actors and actresses have visible clouds of breath indoors in several scenes. The prince, Li Qian, (main male lead) has red hands in many of their interactions and I just want to reach through the screen and warm his poor hands.
Ah, the dialogue was in episode 31 according to the recap/review I have bookmarked.