The Great Curse 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

The reincarnated time traveler, Chen Yu, is deemed an “illegal intruder” by the will of the high martial world in this work, and is cursed with a state and causal reversal! While others eat to satisfy their hunger, the male protagonist becomes starving when he eats. What kind of nonsense is this? But wait, in this dog-eat-dog high martial world, doesn’t it mean that while others cultivate by consuming elixirs, Chen Yu cultivates by consuming poison?! Even taking a heavy blow can increase his strength and enhance his vitality…