The Demon Core of a Third Grade Demon is used to refine Spirit Pills for Golden Core Middle and Late Stage Cultivators to consume. Despite requiring just one type of third-grade main material, to refine a Demon Core of a Third Grade Demon requires the strength of the Golden Core Stage.
However, upon reflection, given that Liu Gang did not participate in the battle at all just now, Li Yuanba did not wish to have too much contact with such a cultivator.
Whether a Devil Cultivator or not, within the sect, when cultivators undertake a common task, those who seek to gain benefits without contributing are despised by others.
Although Li Yuanba has been in seclusion himself, he is always called upon for major events, just like he dealt with the Vajra Giant Armored Turtle today.
This was a matter agreed upon by the three of them; it wasn't that he was neglecting his duties.
