I really liked the main couple. They were understanding and there were not stupid fights or break up . Although the FL starts of as a little stupid , she does grow well into her character. ML is not exactly the perfect swoony boyfriend but he was good enough.
The second lead couple could have been developed better and not just used as filler.
Also the part which disappointed me the most was the ending, what with everyone suddenly picking up injuries,the final which should have been power packed was nothing but a sham to make the leads win . Like at least the reason for them winning could have been better than being the main characters. Also I feel bad for xiaoyi, because after all that she certainly deserved a medal.
All in all the couple is nice, the story is fine , just towards the end felt a bit dragging,and maybe to others the ending would be acceptable as well. Can be a good watch.