Amazing at start but disappointing

I loved how the show started . I liked how witty the leads where . They were so intelligent but idk for what reason they seemed so weak after 20 episodes or so . When the ml father found out i wished he fought instead of surrendering. The story was building love triangle at start but idk where it disappeared (with the villian ml nd fl) . It was a Lil draggy in between. Overall u can watch it once
Idk why the sister of another emperor didn't tell his brother about the villian
The show didn't do justice to bad people especially ml father he was so annoying.