If someone asks me if this drama is worth watching I'd say yes, but there are a few points that are quite bad in my opinion.

The first half of the drama is really amazing, the youth is expressed in a really good way. There is also a lot of amazing quotes regarding the events that the characters are going through. It remains a little slow but it's not really a big problem.
The second half on the other side is disappointing. Li Xia, although she's the main lead, became quite useless. The romance between the main leads is boring and the second leads characters are way more interesting. Lu Zhi Ang and Cheng Qi Qi were probably the ones having the best development.
Also there is a loooot of useless flashbacks of things you saw two episodes before, it's too bad.
The ending was quite good, nothing really surprising but it wasn't bad.

The cast is really amazing, I'm a big fan of Chai Bi Yun but all the actors were really good and conveyed emotions perfectly.

So, I would say that this drama is really worth watching, but I wouldn't watch it again personally