Overlapping Waves art description

Looking at this white scroll in his hand, Bai Yunfei was rather excited inside. He poured his soulforce into it impatiently.

“The ‘Overlapping Waves Art’, a mid-human tier soul skill that uses a special method to control the explosiveness and stretching of the muscles and bones of the arm so that the force of a punch behaves like an overlapping wave. The resulting power is thus several times greater than that of a normal punch….” After having read the contents of the scroll, Bai Yunfei carefully arranged his thoughts for a while. “A soul skill….I’ll have to control both the muscles and the bones at the same time. No wonder I can only practice this after reaching the Soul Personage stage.  This means that I’ll have to be a Soul Warrior before I can use the other scroll. Is there a soul skill in that one too?

http://www.wuxiaworld.com/usaw-index/usaw-book-1-chapter-14/