As Du Liuyun finished speaking, he waved his hand, and four items flew out from his Spirit Ring: a top-grade quasi-Saint Pill, a top-grade quasi-Saint Sword, a top-grade quasi-Saint Talisman, and a formation diagram of a top-grade quasi-Saint Array.

Du Liuyun pointed at the top-grade quasi-Saint Pill and said, "This is a top-grade quasi-Saint level, Threefold Corpse Refining Pill. One of its main ingredients is the 'Yin-Yang Soul Returning Herb.' This herb can also be substituted with 'Yin Corpse Cemetery Moss' or 'Yin Fiend Poison Soul Grass.'"

"The question is, if these two alternative main ingredients are used, what kind of variations in pill effects would occur, and how should they be substituted? You must answer clearly!"

Du Liuyun released three jade boxes, and upon opening them, the three main ingredients he mentioned were displayed inside.