A Thousandfold Return: My Master Is Invincible Across the Heavens

Qin Yu transmigrates to the world of Shrouding the Heavens and obtains a sign-in System that grants ten millionfold critical-hit returns.

He teaches a disciple twenty years' worth of cultivation, triggering a thousandfold critical-hit return and earning ten thousand years of cultivation.

He gives a disciple a Foundation Establishment Pill, triggering a thousandfold critical-hit return and earning an immortal pill.

He bestows the Nuwa Heart Sutra and the Original Golden Scripture on a disciple, triggering a ten-thousandfold critical-hit return and earning a cultivation method for a Mythic Great Golden Immortal.