This is the first time I've seen either main actors. I am quite impressed

Pros:
The plot - it keeps moving! None of the scenes were wasted
The acting - Both Steven Zhang and Liang Jie nailed their roles. I can readily tell when they were playing each other. Being a fan of idols - I kept seeing Steven Zhang - acting like one of my favourite idols. I am not familiar with his personality but he was really convincing as an idol. Liang Jie - was great acting like a guy. She was cute but not overly cute.
The chemistry! both leads had great chemistry with each other.
The family/friends - I liked how close they were with each other. He had a wonderful manager and group mates.

Cons
The beginning and end scene. What was that about? It lessened the show for me, made it seem less magical.

Overall, I recommend this drama. I don't typically watch modern cdramas - because I find them draggy. But I really enjoyed this one.