The Divine Wall of Shilon
The Divine Wall of Shilon is a physical structure that symbolizes the invisible barrier that circles the entire Shilon Empire from the inner core to the very heavens. The wall was summoned by the great Shenhai as a gift for humanity's first settlers. Ever since the wall has saved the kingdom from numerous threats, such as the Monkhu empire, and even bigger threats such as Yamamura. While the wall itself is a man-made structure, the barrier that surrounds it is indestructible to keep out all living things. The only opening through the barrier is at the very entrance of Shilon itself, where the great Mao Rang lingers, guarding Shilons one opening till the end of time.