I honestly lost after over 20 episodes. Only Kenny Kwan who dressed up as a female was the best actor and funny.
The story is very boring.

The writer could add some surprise .. The Twin met the Purple eyes Princes (Rosemallow met the Prince Kenny Kwan). She should act surprise, "Oh! My twin sister also has purple eyes like yours." This will sparkup the story. No, it just simply boring.

THen the twin males should be able to explain to the twin females that they had twin. But the writer made it a secret that these two men can't reveal they were twin.

Honestly Chinese dramas are made for low IQ audiences.