C353 Mysterious Vine

"Sinful Grotto? What is this place? I've never come across any mention of it in the ancient texts I've studied."

Gazing at the stone wall engraved with ancient characters, Chu Lin combed through his memories but it remained unfamiliar to him.

He glanced over to see that both Murong Que and Bai Qingcheng were equally perplexed, clearly lacking any knowledge about the Sinful Grotto