Before setting off, You Sifang had sent a voice transmission to Li Yu, claiming that he possessed the "Yang-Flint Dao Body" and asking if Li Yu could help him acquire the main ingredients for the Foundation Establishment Pill.
A Dao Body was not exclusive to cultivators with mutated Spiritual Roots; ordinary Spiritual Roots could occasionally produce them, though the probability of such an occurrence was exceedingly small.
Regarding the "Yang-Flint Dao Body," Li Yu naturally knew its foundations, as he had the "Hundred Dissolutions of Dao Bodies" stored in his Storage Bag.
Chapter 106