The Era of Vampires is an interesting idea. Take the typical wuxia martial arts film and add a horror element in the form of vampires. On the surface this sounds great. Extraordinary fighting visuals with dark and supernatural tone. The inborn grace and elegance of vampires seems like an excellent fit for wuxia.
Unfortunately we end up getting very little of that. Partly because the vampire they end up going with is radically different from a typical Western vampire. It's more of a force of nature, an unstoppable monster that rips into pieces everything standing in its way, visually more of a zombie lord than an aristocratic vampire. And it is utterly terrifying. I actually really like this take on one of the oldest monsters in our collective mythic lore. Fantastic horror villain, even if it means that the fights are not as grandeur as they would have otherwise been.
What really fails this movie is the lackadaisical nature of the script. You don't really identify with any of the characters, the side plots are either clichéd or have nothing to do with the other plots, the backstory is convoluted and the world building doesn't really work. Plus the whole film is shot way too dark. Oftentimes you have problems making out what's happening, making the fight scenes even less stellar.
That being said, there are some good fights and as stated, the vampire is very impressive. Making this a film that's fine to check out if you're really into wuxia or you want to see a radically different take on vampires. It's not really a good film, but it has its upsides.