On the first day after transmigrating into a book, Lin Yuan discovered he'd become the cannon-fodder master who would have his cultivation crippled by the protagonist five years later.
He couldn't run away, cripple the protagonist, or beat him.
So he decided to give up and coast.
Teaching alchemy? He copied every prescription wrong and switched low heat to high heat. His disciple ended up summoning a heavenly tribulation.
Teaching swordplay? He demonstrated the wrong grip seventeen times. His disciple split open an ancient seal.
Teaching talisman drawing? He scribbled some nonsense. His disciple summoned an ancient divine beast.
Lin Yuan: I really did teach you wrong. Why won't you believe me?
Everyone else: The peak master is hiding his true abilities. Stop pretending.
Lin Yuan: This world is beyond saving~