I revised my initial review because i think it was too harsh. This drama was basically a film adaption of a book which must have been very romantic. There was honestly no huge war or any enemy to keep you interested in the plot. Watching the characters interact with each other & how they overcame a major grievance IS the drama.
I picked this drama up because I loved Zhang Wan Yi in Lost you Forever. I honestly think he carries this show. He's great at expressions and makes me laugh. I finished it just for him, honestly i might have a crush and i don't even speak the language! If you aren't a fan of any of these actors you might be bored with the overall plot.

Story: The drama is split up into two parts. The first half is Fl being the sweet wife with slice of life vibe. Basically, by episode 20, FL has already figured out she mistook ML for her old lover because he was merely going along with it. She remembers her assassin identity, and also figures out that the organization is not the same as it once was. So CUE THE CLICHE of "i hate you now so let us break up and still think about each other every day".

So then there's a sudden time skip where the empress dowager and little boy king were dethroned. Lol what happened to them?

Watching the new Empress grow a wholesome relationship with the new king(FL's old lover) is interesting. Seeing him be able to finally let go of Liu miantang is something i didn't expect to enjoy.
Overall it's a good wholesome romance drama with some angst in the middle. If I can last through 40 episode of a cdrama nowadays, i'm giving it an 8.