Nirvana in Fire is one drama I hold in the highest esteem. I watched it 4-5 years ago and I definitely think this should be a classic. The story is just amazing and so well thought out. The characters were wonderful and the traits they promote in the series make you wish that these characters exist in real life.
The pace in the beginning is slow but the setting is so beautiful that it doesn't take away from the drama. I also think it was necessary to set the scene. The acting was flawless. I worried and cared about so many of the characters. Fei Liu is just adorable. The loyalty, the virtue and honour of the characters are so inspiring.
I know series like this is not for everyone, and I'm not even the type to like this kind of series but this is the highest rated series of all time in my mind. This is a MUST WATCH.