Poison Catastrophe is a Manga/Manhwa/Manhua in english language, Manhua 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

After the great change, the world is full of [Poison]. Xing Yuan, a genius magical device inventor, lives peacefully in a small you desert town on the border, but suddenly he encounters a sudden change,...