Busan City, where the All-Heavens Plane Transportation Formations are located, is a ring-shaped structure formed by nine great halls linked together in a circle.
Precisely because of this, the ring-shaped building has nine entrances, which are at the same time the main doors of the nine great halls.
"These nine great halls are where Busan City's All-Heavens Plane Transportation Formations are situated… Inside each of these nine halls, there are nine All-Heavens Plane Transportation Formations, each corresponding to a different heaven plane."
"Nine great halls, that makes eighty-one All-Heavens Plane Transportation Formations, exactly corresponding to the eighty-one heavens, including our 'Spiritual Heaven'."
After stepping into the air from the plaza, Bruno Fortin looked at the ring-shaped building formed by the nine great halls behind the plaza and explained it to Wyatt Barnes.
