C874 Treating a Tiger for Its Skin

"Medicine catalyst?" Tang Yu looked at him in confusion and said in a daze.

"Yes, Essence Yin Pill, the chance to become a Heavenly Immortal." Daoist Qingmu looked at Tang Yu indifferently. His eyes were sharp like a blade, making Tang Yu feel uneasy.

Tang Yu said in a daze, "What do you mean? I don't really understand."

"Stop pretending. Others might not be able to see it