In this chapter, we learn that the Grand Master has already mastered the Heavenly Flow style of physical skills. The Grand Master explains that he is the only person in the world who knows about this style of martial arts. He says that even before his father's death, he told him that he would find him and teach him the style of Heavenly Flow. He explains that this style is determined by one's own spiritual power. In other words, a person's physical skills are determined by his or her spiritual power, not by their physical abilities. This means that a person who is weak in one area of the body will be weak in another area. This is why Master Wu is so confident that he will be able to defeat Master Xie.