chapter 315 Can’t break the defense!

The two fists collided and suddenly a sound was made!
Xu Yun took three steps back!
The black bear stood there, not moving at all!
"Haha, did you see it?" Xie Wu laughed.
However, at this moment, the black bear suddenly shouted in pain: "My fist... my fist bone is broken... ah!!!"
He covered his fist and screamed in pain.
Everyone was stunned. What... just happened? !
Xu Yun also looked at his fist unconsciously, and he didn't feel any pain at all!
"What's...