Imagine a world ravaged, where survival clings to the precarious heights of self-made fortresses. In Han Mubai's *I Have A City In An Alternate World*, Tang Zhen finds himself thrust into just such a reality – an apocalyptic landscape riddled with unseen dangers that render the surface world uninhabitable. But Tang Zhen isn't alone. He carries with him a lifeline, a cell phone altered beyond comprehension, brimming with miraculous applications that defy explanation. This is a world of impossible cities. Some soar through the skies, defying gravity, while others plunge into the ocean's depths, hidden from view. Still others cloak themselves in invisibility, concealing secrets that could shatter the remnants of civilization. Tang Zhen's path lies in building his own city, nurturing its growth, and rapidly empowering its forces. His destiny? To seize control, to dominate this fractured world, one city at a time. Picture this: Tang Zhen, enthroned above a sprawling, floating metropolis. Dragons circle protectively, angels stand guard, and cannons bristle, a testament to his power. But his ambition stretches far beyond. In the ocean's inky blackness, a city of continental proportions awaits, a prize and a challenge. Dive into a narrative of strategic city-building, military might, and the thrilling conquest of a world brimming with both peril and untold potential. Will Tang Zhen rise to become the ultimate ruler, or will the secrets hidden within these impossible cities consume him?