Cultivator Shen Yu was also looking at his master.
Though he wasn't very knowledgeable about cultivation in the True Master Realm, he had been in this world long enough to have some understanding of its cultivation practices.
Breaking through a realm usually happens in two ways.
One is breaking through through one's own cultivation technique.
Whether it's step by step like water wearing down stone, or a sudden moment of enlightenment, in essence, it's an internal accumulation.
The other way relies on external forces.
Elixirs, resources, various Heavenly Materials and Earthly Treasures.
There are even some cultivation techniques that can assist in a breakthrough.
