I thought this would be just a normal drama with a not so amazing storyline. But I have to say, it was so so amazing.
Firstly, the main lead's personality...I thought in the beginning he would be very cold and strict like male leads are in dramas like these. But to my surprise, Xing Ke Lei was so easy-going and funny. His expressions killed me every time. He was understanding, calm, lovable and caring. The female lead was also not portrayed as a weak person who needs the protection of the male lead all the time. She was brave and great in her own way. One thing I noticed that her dressing was to her own comfort and she didn't go out of her way to look beautiful for her boyfriend.
After the main leads get together, they have a lot awkward moments between them. That is how it is in real life. You are still getting used to each other and not everything is perfect and lovey-dovey. They had their chemistry though. They understand each other and respects each other's choices. They were too cute. One of my favourite things is when at the end Xing Ke Lei says that he cannot be hers only and cannot always put her first. They showed true feelings and realistic things in this drama.
As for the other characters, I liked Xing Ke Yao. She was just like her brother, funny and caring. I'm glad they didn't give us the evil sister-in-law. Also, Shao Yu Han's role was nice too. He was a good teacher who always had faith in his students. Straightforward and to the point.
There were some points that were not so good. For example, the mission the male lead was on whilst the female lead was isolating was rather confusing. It was just there to lead him to the Mi Ka and make us realise he cannot always be there for her. But it wasn't needed. Some time wasted on that. Some of the episodes dragged on a little.
Overall however, it was a truly great drama that I recommend to you.