Conclusion: The drama plot changed halfway and it became messier.

There was a lot of potential with this drama - the actors and love lines. However, the writer seemed to have diverged from the initial plot and introduced filler story that dominated the whole drama. Although the main characters were Zhao LiYing and Kim Jin, the amount of screen time the 2nd male/female lead had was (or at some point more than) similar to the main leads. In some episodes, you probably get collectively less than 10 minutes screen time of Zhao LiYing. I've read on some Chinese forums that the director had some last minute changes during filming but due to ZLY's strict schedule she was unable to refilm some scenes. Which could explain the poor progression of the story.

Another note, considering this drama is about fashion design - the looks that they 'designed' were somewhat unoriginal and seemed like they just purchased off taobao.

The drama had a lot of potential with the lineup. As a fan of ZLY, it is disappointing to see her recent works end so abruptly (i.e Princess Agent) and decreasing screen time as the drama progresses because of her tight schedule.