That day, seawater swallowed the world. When Lin Bei woke up, all he had beneath his feet was a broken wooden raft and a softshell turtle. But he refused to accept his fate. Starting from nothing with his own two hands, he transformed the raft into a home on the sea—Xuanwu City. Here, no one asks where you came from; only what you contribute matters. Whether you farm, forge iron, make medicine, or teach, everyone can find their place. When the cold wave comes, he stands at the front to shield everyone. When the storm rises, he is the first to charge forward. Xuanwu City may not be big, but it can hold the tomorrows of countless people. Through his actions, Lin Bei proves that no matter how desperate the world becomes, nothing can extinguish the light of a group of people determined to live wholeheartedly.