[Invincible + feel-good story + face-slapping + play the pig to eat the tiger + see for yourself]
After Lu Chengshi fought against the Heavenly Dao, he was transported to an unknown space, where he remained for over a hundred thousand years.
The unknown space contained no living beings or objects, only a boundless white expanse. Anyone would go mad after just a few days, let alone Lu Chengshi after spending over a hundred thousand years there.
By a stroke of luck, a teleportation jade pendant Lu Chengshi had once given away was accidentally smashed, allowing him to teleport out of the unknown space.