C148 Guru Qingming

"Revenant Gu, what is that?" This was the first time Lei Yang had heard of such a strange name, and he immediately asked with curiosity.

"It's actually a Gu poison, a powerful Gu poison that lives within the body and can absorb resentful energy to strengthen the body!" Xiao Rang said slowly, his voice carried an unending pain, as though he had endured endless torture