Reborn as a Demonic Cultivator: Starting with a Zombie Planet 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.cc fastest updating comic site. The Summary is

Chu Xuan traveled through the Cangxuan world and became a demon cultivator of Wuji Sect. The so-called demon cultivation is to plunder the essence of heaven and earth and seize the essence of all things. After slaughtering thousands of people, he became the Great Demon Lord. However, killing is not tolerated by the heavenly way of the human race. Wuji Sect was also destroyed by the righteous sect. When he was helpless, Chu Xuan accidentally got the blood mirror, which could take him to a doomsday planet full of zombies! He suddenly discovered that this place is simply a paradise for demon cultivators!