Peter Brown sat for several days, with his insights from the Phantom Realm as a foundation, and thus created a new Cultivation Technique capable of integrating various techniques, which he named the Expanding Domain Technique.
This Cultivation Technique of Peter Brown had no offensive nature; its main ability was the conversion of energy.
This is a Cultivation Technique purely unique to Peter Brown, impossible for anyone else to use even if they acquired it.
The Expanding Domain Technique has a few characteristics, firstly, as long as this technique is in operation, the energy will carry a trace of one's own will, which is crucial for Becoming a Saint.
Secondly, this technique can strip all incoming energies, leaving behind only the most fundamental energy, a completely new form of energy.
Thirdly, this technique also has an integrative property; any type of energy that merges into Peter Brown's new energy can be freely manipulated.