In Jin Yong's novels, there are at least three absorbing skills: Hua Gong Da Fa, Bei Ming Shen Gong, and Xi Xing Da Fa. Between these three, which one is the most superior and which one is the less superior, and why? Your analysis and opinion, please. BTW, if I leave out any other absorbing skills in Jin Yong's novels, please do mention. Thanks.