Lin Changsheng spent a full three days "studying" the Myriad Arts Returning to Origin.
This cultivation manual was indeed incredibly profound. Its core philosophy wasn't about teaching one how to cultivate, but rather expounding a worldview of "all things originate from the same source, energy is conserved."
In the eyes of the manual's creator, whether it be Spiritual Qi, divine soul, flesh and blood, or gold, stone, grass, and wood, their essence is composed of the most fundamental "origin," merely manifesting in different forms.
The ultimate goal of cultivation is to perceive this essence and transform and control all things at will.