C77 Challenge

Just as Xu Feng's voice faded, Hong Qingxuan's expression suddenly changed. His already gloomy face instantly turned red, "You actually want the Boulder Body Tempering Pill formula!"

The corner of Xu Feng's mouth curled up and revealed a trace of a smile. He slowly said, "So what if it is. I remember that the rules of your Pill Hall's arena are... As long as the challenger wins