First, what I liked - the roommates of both the ML and FL. They brought a lot of heart and humor to their roles. I also always like a large height difference between the leads. However, this led to one of my problems with this drama...

The ML was borderline abusive to the FL. The first time he grabbed her by the face and kissed her, it really was rough. Plus, he was always dragging her toward him roughly, or grabbing her by the arm in an overly firm manner. This really bothered me. I don't think that behavior is ever acceptable, but I might have been more tolerant if she wasn't so tiny.

ACTING: Ireine Song - I've only seen her in one other thing, and her character was pretty much the same, so it's hard to judge her acting prowess. Aaron Deng as Qin Shen - wooden and expressionless throughout. I've not seen him in anything else, so I'll reserve judgment on whether it was acting or the script. Which brings me to -
WRITING: I didn't care for the way the main characters were written. Qin Shen was a total Tsundere, but we never got to see the soft side of him. On the rare occasions that he smiled, it seemed somewhat forced. It would have been so nice to see him develop some warmth, especially as it related to his roommates. It always seemed there was only tolerance, I would have liked to see sincere friendships develop. The FL even used the statement about him not using his words. Throughout the drama, it was grunts or one-word answers. He was overbearing physically to the FL as mentioned before, as well as being possessive and jealous, and not in a cute way, telling her she couldn't talk to guys, following her around to monitor who she was talking to. This could have been portrayed in a way that was sweet and showed how he cared for her, but it didn't get portrayed that way. The FL character of Yuan Qian - when she stood up to the bully, I had high hopes for her, but she seemed like a "taker/user" to me, always asking others to do things/get things for her. She was also eavesdropping on every conversation he had with anyone. In every Asian drama, there always seems to be falling/tripping as it relates to the FL. This show took it to the extreme. She was ALWAYS falling, stumbling, tripping, or walking into things. I also didn't care for her attempts to be "cute". She was never willing to tell him how she felt, but was constantly asking him, "Isn't there something you want to say to me?" Each episode seemed to be a repeat of the previous episode, misunderstandings, him being mean, her trying to get him to tell her he liked her, and the friends giving both of them a hard time. As for the character of Ling Wei as the girl that liked Qin Shen - she seriously needed therapy! The writers also never really delved into why he was so mean to her, what had happened in their past, or anything like that.
RELATIONSHIP OF LEADS/CHEMISTRY: He was silent, bossy, possessive. She pouted, stomped around, was mad or employing the silent treatment A LOT. They spent a lot of time staring at each other, and not much time having actual mature conversations that would develop a relationship. This didn't feel like a healthy relationship to me at all. Granted, one of the reasons I enjoy romances is because it's not real life, but for me, this relationship never felt lovely, or something I wanted to see more of. Chemistry between them was severely lacking. In general, the relationship felt toxic.
MUSIC: I don't remember it.
REWATCH: There weren't even any scenes that I think I'd want to rewatch.