I am in need of getting some help to watch this historical/wuxia Chinese drama that I watched for a few years ago where there a group friends and the male lead (I think) is sick/dying. With help of friends they tries to find a cure 

A few come to mind - Legend of Fei, Love in Between, Fighter of the Destiny, and I've seen it as a brief plot in a few others. Also it was only last year, but Mysterious Lotus Casebook fits as well from what I've heard. Do you remember anything else about it if it's not one of those?

While there are several dramas that might fit this description, one that stands out is Nirvana in Fire. In this highly acclaimed series, the main character seeks justice and revenge amidst court politics, and although not exactly sick, he is a character with a complex and heavy past.