Reborn In The Apocalypse: It Had Always Been You - Chapter 166 Mental Domain

Dynasties rise and dynasties fall, like the tide washing the sand.

A supreme expert in the Immortal World had died, and a strand of his soul returned to its original body on Earth. Tang Xiu discovered with amazement that ten thousand years passed in the Immortal World, yet only a single year passed on Earth.

Ruthlessly betrayed by his lover and trusted friends, Tang Xiu found that his soul went back to his previous body on Earth, and, despite he spent 10,000 years in the Immortal World, just a year has passed on Earth and many things have changed. Having an unsurpassed knowledge, Tang Xiu will protect his loved ones and go back to the Immortal World to take his revenge.

- Description from Novelupdates

On that fateful day, a voice in the sky told everyone on Earth that the world they called home has just been part of some sort of simulation.