C1086 Comprehension Stone

Black stone the size of a fist, oval in shape.

"Dao stone? I didn't expect you to find such a thing!" Loong Biyao looked at the black stone in surprise.

"What is its use? Is it special?" Chu Tian asked as he looked at Loong Biyao's expression.

To be able to get Martial Emperor Five-Elements to create a Mind Clone and give it to him, and to have Loong Biyao reveal such an expression