I was in the mood for reversed gender roles so I searched for dramas on MDL with this tag and found 'The Only Girl You Haven't Seen'.

What I liked:
1) Leng Li characterisation - I love her character! She's tough and feisty but lovable. She goes for what she wants and that includes her feelings for male lead He Lian Xuan. I also like that she's brainy - she knows about herbs and uses the knowledge to help people. Wen Mo Yan was brilliant in this role. She kinda looks like Kim Sejeong, a Korean actress and pop idol.
2) He Lian Xuan characterisation - I enjoyed his character too. He is protective of Leng Li but at the same time, couldn't show his full self to avoid trouble with others. His other persona Qing Ru is cool. Wang Zu Yi was brilliant in this role.
3) Romance - I could feel He Lian Xuan's feelings for Leng Li - so genuine & pure of love & admiration. Damn I love it when a woman makes the first move and gosh that scene of Leng Li making the first move is HOT! I also like that Leng Li never resisted He Lian Xuan's feelings - she too never doubted her feelings for him.
4) The comedy - Never expected comedy scenes to be laughed out loud. Leng Li getting back at He Lian Chen and 6th prince was a gold moment!

What I disliked:
1) Transmigration arc - I feel like this plot wasn't well explained.
2) The ending - I understand why the series ended that way but why make it a sad one?

Favourite scene
When Leng Li told He Lian Xuan to "be a man" in episode 5.