The Big Dipper was a treasure that allowed those at the True Monarch Realm to raise their strength by a small realm.
After a cultivator entered the Sixth Stage Realm, they would need to go through several small realms—Spirit Lake Formation, Laketop Life Wheel, Ten Heavenly Layers, Lotus Formation, Nascent Soul Formation.
Among them, the Ten Heavenly Layers was a very important part of a Sixth Stage cultivator's journey. The number of layers one had was greatly dependent on the foundations one had laid down for themselves while at the Fifth Stage, and this could determine how far one would be able to go on the path of cultivation.
The Big Dipper was a treasure that provided assistance during the [Laketop Life Wheel] and [Ten Heavenly Layers] portions. When a medium-grade Big Dipper appeared, it would attract large forces and sects to fight over it.