Reborn in the City to Cultivate as an Immortal

In a hundred days, the Divine Land will fall, and a century later, only ruins will remain. Time turns back, and everything starts anew. Are you willing to forge peace for all generations? After being reborn, he discovers that in a hundred days, another world will descend upon Earth. The Cultivation Realm stands high above, looking down on humanity. The backbone of Earth's human race must not break, so they will fight! Either the prosperous age is wiped out, or they are reborn from the ashes...