I Have a Spacetime Capsule

After an accident, Lin Guang transmigrates into the body of an invincible powerhouse. But his power is sealed by a capsule, and the only way to break the seal is to deliver a designated item to its target.

From then on, Lin Guang becomes a courier in another world. But he gradually discovers that what he's delivering isn't a letter. It's the Heavenly Dao's punishment for someone...