He took out the Cultivation Technique of Paul Nash, as Peter Brown now needed to further understand the cultivation methods of the Divine Race.
So that's how it is!
After seeing the cultivation methods of the Divine Race, Peter Brown had come to understand their situation. Indeed, it was differentiated by star power; one only met the standards of the Divine Race when they could manipulate the energy of a star planet. Of course, not just any planet could be considered a star in the concept of the Divine Race; only constants the size of the sun counted as possessing the power of one star, smaller ones did not qualify.
Additionally, Peter Brown discovered that possessing one-star fate meant being able to manipulate a constant star, and within this star, there should be ten billion lives to qualify as a person of one-star fate.