The Heaven Reverse Universe was made up of five lands, the Great Land, the Ocean Land of the East, the Barbarian Land of the North, the Voodoo Land of the South and the Feather Land of the West.
The Great Land was composed of nine plains. Located in the center, the Central Plains was the largest in size. The other eight combined was smaller than the Central Plains.
Hence…
Lu Li had thought that the other places were about the same size as the Cyan Plains and the Northern Desert. All were small places - countryside. Only by looking at the map today did he learn that three plains were quite large, the Clouds Plains, the Wings Plains and the Serenity Plains.
With more territory, came more population and resourses, which meant the number of powerful warriors would be large as well.