Nine Abysses I: The Nine Realms United

In ancient times, the world was divided into nine realms: Genggu, Jiwei, Xuantian, Jianyue, Qingjian, Diyu, Tongguo, Guixu, and Damo. The nine realms depended on and supported one another. But at the end of antiquity, their connections were severed, and only Tongguo remained. Three hundred years later, the nine realms reappeared by chance.