Era of Cataclysm: I Went from a Refugee to a Mastermind Behind the Scenes

In the era of cataclysm, the surviving humans huddled within high walls. Cao Yu, a young man outside the wall, carries the relics of his late father and breaks into the "Seventh Special Zone" in search of a chance for survival. However, he finds himself involved in a huge conspiracy that spans both inside and outside the wall. The legacy of the old era shines in the dark, and the eyes of the organization wander in the shadows. When he held the blue potion, he chose not power, but the key to Pandora's box. In this collapsed world, truth is more deadly than radiation, and trust is the most expensive luxury for mortals.