In Lingxiao City, a sky fortress suspended in the clouds, Lin Yao, a young genius mechanic, discovers that the Heart of the Sky, the ancient core engine that maintains the city's flight, is about to run out. Between the military faction that advocates innovation and intends to replace it with dangerous new energy, and the conservative faction that vows to protect the ancient heritage to the death, a war that will determine the survival of the city and humanity is about to begin.
Total number of chapters: 91 chapters
