He could not destroy the core of this world even at his full strength, but the world was destabilized and various natural disasters began to appear to bind the members of the three great sects and the wild beasts.
Zhang Yi didn't bother with things happening and kept attacking, after several attacks the core was destroyed and Zhang Yi used teleportation to get out of this world, just as the underworld happened to this world.
But this world had no treasure used for his creation, even though Zhang Yi didn't know how to create a hidden world without using his mental energy, the guards were surprised to make the world break and then disappear.
All deacons and elders within these ruins eventually died from the destruction of the world, Zhang Yi felt that the laws of his massacre were strengthened after killing hundreds of thousands of warriors and millions of wild beasts.