Male lead in both dramas are extremely smart and both shows are just full of surprising and shocking events. It's just that Joy Of Life has more comic and funny scenes where as Nirvana In Fire has a very serious and tight plot. If you wanna watch a perfect drama with almost no flaw regarding costume,set up,story or anything NIF is the defination of perfection. JOL might not be that perfect and accurate in terms of costumes and the seriousness but I must say both dramas are equally important to me and if you are really into c-dramas looking for something really good please please do miss any of these. The most important thing about both the dramas is that they have got the best actors of the industry and I mean it. It will not disappoint you.

First of all the second male lead of bloody romance Wang Duo (prince of Ning) is playing main role in this movie also. it has amazing production quality, good story, suspence, VFX is also good
The point of recommending this one is that, Wang Duo has acted in very few dramas/movies and is one of the most underrated talents and if you really wanna see him act more so this one is for you