Because of the rhythm of flow around him, Ma Yuan's body was being transformed to adapt to his state while still maintaining its strength. The changes in his body were adapting to his lack of a core and dantian, while still maintaining its strength and essence as the body of a core formation expert. With the changes happening to his body, soon enough he may not need to eat food that contained dense volumes of spiritual qi and essence capable of sustaining a core formation expert. His body would be able to function normally just doing what he was doing, surrounded by life.
Yang Qing could feel his thoughts flowing into a high state. Ideas that he had thought of being aligned together to form a pathway of enlightenment.