Li Fan traversed the tunnels for several days, chasing all the way to the outskirts of Jingji, but he couldn't trace the source of the Yuanfeng Iron Flow. He discovered that the rat nests seemed to be merely transit points, and the underground world these rats had excavated far exceeded his imagination. In fact, it appeared that beneath the entire Jingji region, a vast subterranean world had been constructed!
Actually, the direct construction done by the rats was not extensive. The current Three Yuan region was originally the new Wangjing, and the Immortal Palace had existed in the world for ages. It had endured endless wars, been repeatedly rebuilt, and suffered several instances of destruction by civil strife, where half the city had been leveled by fires and sandstorms. Compared to those earlier upheavals, the recent turmoil that scorched a small portion of the city was hardly worth mentioning.
