The Great Curse summary:

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