*lol* I have only watched six of the dramas listed, but I really have to question the fact that The Journey of Flower is on this list. It's a sort of fantasy drama, not historical! I'm pretty sure there was never a time in history where some people who had to guard magical "deity devices" were (trying to become) immortal and were divided into "sects" that (sort of) watched over normal humans. I get that the line can get blurry sometimes (like Megan says, if most of the drama takes place in modern times, should it count?) but it should be drawn somewhere... The ability to almost fly and have super human strength (wuxia) is perhaps acceptable....
Well, sorry, didn't mean to be negative! My favourite ones are Nirvana in Fire, Gunshi Kanbei (but it's not top rated!), Battle of Changsha, Six Flying Dragons and The Disguiser. :)