City No.14, the border between the Upper City District and Central City District.
Tall city walls divide the Upper City District from the Central City District, with numerous patrol guards stationed at the city boundary. Residents of the Central City District passing by occasionally glance at the high walls, eyes filled with envy.
On either side of the walls are two completely different worlds.
If the Central City District already looks like a futuristic city, then the Upper City District is pure science fiction.
On the ground are lush green parks. In this land-scarce place, a large natural park occupies the entire ground of the Upper City District, filled with exotic beasts.
The actual residential area of the Upper City District is nearly a hundred meters above the ground, with floating islands scattered across the sky.
Each island is an independent little world, with medieval castles, sci-fi skyscrapers, magical castles, and manor palaces almost everywhere.