Mortal stage uses linear scaling. After first cultivation breakthrough, formulas shift to logarithmic — diminishing returns on raw stats but no upper ceiling.
— regresses cultivation; the manual goes on a 1-year cooldown.
Forget a Method
Forgetting a cultivation method regresses your dao. The chosen manual returns to your inventory but cannot be re-equipped for one year. Be warned: dropping below your current realm may shorten your lifespan to the point of death.