Tianxu Invasion, Things Between Me and the System

A thousand years ago, a huge hole appeared in the sky of this world, which was called Tianxu. Since then, the order of the world has changed. The strong have everything, and the weak can only obey. And our protagonist Su Yu comes here with a system that is incompatible with the world. So, what is the use of this system? So, what is the use of this mentally retarded host? Everyone thought in unison in their hearts. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.