I Purify the Wasteland in the Apocalypse

The first thing Ning Xi heard after waking was: “Clone successfully awakened.” You exist to atone for your sins... Your core mission is to purify the tainted world... Atone? Whose sins am I atoning for? It turned out that 200 years ago, a woman awakened the power to tear open space. Her reckless use of it left the Federation's lands riddled with small worlds. Ning Xi enters these small worlds and works tirelessly to purify them. Then an NPC in one of the small worlds says: “Sis, you're back?” Ning Xi looks up sharply. Something is wrong! Very, very wrong! This book is also known as Reborn After the Calamity: Immortal and Undying, Humanity's Awakening Starts with Me, Clones Deserve a Happy Ending Too, Reborn and Now a Sanitation Worker, and I Am the Calamity's Big Boss.