Let me just start by saying that this is one of the few dramas that I have watched without missing a scene. The acting was phenomenally done. So real. And I'm not just talking about the leads. All the characters were so real, not overdone like other dramas. So much chemistry between the main couple. Wallace Chung is such a good actor and his character NYS the same. At the start of series he is shown as tired, gaunt doctor who is a caricature of his old self. He has lots of angst for the FL and shows this occasionally. He has acted superb in these scenes. TJ is acted perfectly by Li Xiao Ran, as cold, mature lady who is not to be bothered by circumstances and continues forward. Sometimes she is frustratingly cold to NYS but if you understand her past them you this is justified.
Special mention to NYS's father. He is authoritative rich guy who is facing ill health. he comes across the bad guy through out the series but somehow grows on your towards the end. His interaction with his grandson ping ping *Super cute* is a delight to watch. Also SFT, second lead in the story, he is shown as warm, calculative person who has hidden motives. He sacrifices everything for his aim and succeeds, but the few scenes in the last episodes has deftly shown the next. Its quite satisfying to watch his part.
Such a beautiful love story and satisfying ending *sigh*. I was anticipating a dramatic ending but they stayed true to the tone and did not make it over the top. And thank god for that as it makes perfect sense to all the characters and their story.

Overall I definitely recommend this drama, you will not regret it.