C772 Demon Bone!

Crazy laughter slowly sounded as the star figure gradually grew larger in front of Yun Feng's eyes. The craziness of the Demon Bone had far exceeded Yun Feng's expectations. Its degree of craziness was astonishing!

"Gulp!"

His throat was dry, Yun Feng's scalp was numb, this was already the second one, in other words, this Demon Bone was actually using his own cultivation to wear himself down