Chen Mobai remembered that he still had a used spiritual stone in the drawer of his room, and immediately ran back to get it with great enthusiasm.

"This stone, when crushed into spirit essence, can filter the poison of two original elixirs, but it also requires a reactant."

Qing Nv didn't ask why Chen Mobai had such a thing at home. She had already assumed that her benefactor's ancestors must have been great cultivators, and now he was a somewhat fallen young master.

"Can the reactant be purchased?"