Sun and Moon Undecimber is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

There are countless of undead feeding on humans in this world. Countless of magicians have been fighting against them for millions of years but defeat is always the end result. It was not until the emergence of ‘San Zhen' Clan, 3 successors, in 3 different eras fighting against the undead. They are the last chance in this “alive vs dead" war.