[Invincible + cool article + slap in the face + pretend to be a pig and eat the tiger + see for yourself]
After Lu Chengshi's battle with Tiandao, he was transported to an unknown space and stayed there for hundreds of thousands of years.
There are no creatures or objects in the unknown space, only a vast expanse of white. Good people would go crazy for a few days, let alone Lu Chengshi who stayed there for hundreds of thousands of years.
By chance, the teleportation jade pendant that Lu Chengshi once gave was accidentally broken, which allowed Lu Chengshi to teleport out of an unknown dimension.
