"Legend has it that the sky has thirty-three layers, divided into nine heavenly regions.
"The first region is the first layer of heaven, where clouds, rain, thunder, and lightning arise and fade, and celestial weather takes shape. In ancient times, gods and immortals came here on duty to sound the thunder and spread the rain. This is also the sky mortals see. In their eyes, its colors shift unpredictably, but in clear weather, it appears mainly azure. Hence its other name, 'Azure Heaven.'
"The second region consists of the second and third layers of heaven.
"Of these, the second layer is a place where Gang Winds rage. Because it lies above the first layer, its winds are also called the Gang Winds beyond the sky. These winds are powerful, so this layer serves to separate what lies above from what lies below. Otherwise, curious, lowly cultivators from the lower world would frequently ride buoyant winds and magical artifacts up to investigate and intrude, disturbing the spiritual atmosphere above and undermining the heavenly realm's dignity.
"In ancient times, the third layer was deliberately left empty. This layer is extremely high, far higher than the first two layers combined.
"This layer serves two purposes. The first, like the second layer, is to keep people out. The second layer stops lowly cultivators; the third stops advanced ones. The magical restrictions here are peculiar: the longer you stay, the heavier your body becomes, and the higher you fly, the heavier it becomes as well. To live here for long, or fly to an extreme height to look at the ceiling of the third layer, you must at least be in the Fifth Realm, having united with a celestial phenomenon or a light, ethereal object. To break through the ceiling of the third layer, you