As we all know, Zhang Sanfeng and Guo Xiang are the figures who run through The Condor Heroes and The Dragon Slayer. Although their feelings are not explicitly mentioned in the book, we can learn from some details. The person Guo Xiang loves in his heart is Yang Guo. He met Yang Guo at the age of 16 and fell in love with someone. But she knows that Yang Guo only likes the little dragon girl, so she can only keep this love in her heart. Zhang Sanfeng, formerly known as Zhang Junbao, met Guo Xiang, a heroine who wandered the Jianghu alone in Shaoshi Mountain. Young Zhang Junbao was infected by Guo Xiang's chivalrous spirit at a glance and was worshipped by new students. However, Guo Xiang has a heart. After refusing Zhang Junbao, he left alone.

And our Zhang Zhenren lived in seclusion in Wudang Mountain, practicing martial arts hard to alleviate the suffering of lovesickness, and later founded wu-tang clan. Wu Tangmen's disciples can get married and have children, but Zhang Sanfeng has never got married and had children in his life, because Guo Xiang is still in his heart. That is, what later generations called "occasionally Guo Xiang missed a hundred years". However, the fate of two people who are equally infatuated is completely different. After Zhang Sanfeng founded Wutangmen, Guo Xiang also founded Emei School. However, Zhang Sanfeng finally lived to be a hundred years old, while Guo Xiang died young. Besides, they are about the same age. Why is there such a difference? If Guo Xiang can survive, maybe Zhang Sanfeng won't be so lonely.

In fact, there is a reason for this. Master Jue Yuan and Zhang Wuji all know that even Mr. Jin Yong gave the answer, which is attributed to a martial art: Jiuyang Shen Gong. What does this top martial arts school in Jianghu have to do with their longevity? At first, Master Jue Yuan tried his best to escort Zhang Sanfeng and Guo Xiang down the mountain. Before he died, he told the two of them about the magic of Jiuyang. In this process, they all just listened to a rough idea, from which Guo Xiang realized the word "Bo" and Zhang Sanfeng realized the word "Speciality".

Although, we are all in Zhang Wuji's body, we have seen the strength after practicing the magic of Jiuyang, but the more powerful the martial arts, the greater the risk. And Guo Xiang and Zhang Sanfeng's magic of nine yang is incomplete, so when practicing, it will inevitably lead to future trouble. Since ancient times, risks and benefits have coexisted. But also practiced Jiuyang's incomplete magic power. The reason why the ending is different is that Zhang Sanfeng's martial arts talent is extremely high, and he did not practice according to Jiuyang's magic power method. However, from the magic of Jiuyang, he created a set of martial arts system that belongs to himself and suits him, and became a master.

Although Guo Xiang was clever, he didn't have Zhang Sanfeng's high martial arts talent, and finally failed to get rid of the drawbacks of Jiuyang magic. In fact, Guo Xiang is also very good, only slightly inferior to Zhang Sanfeng. After all, Zhang Sanfeng claims to be the person with the highest martial arts talent in Jin Yong's works.

Therefore, Zhang Sanfeng can live a long life, while Guo Xiang can only die young, which is closely related to the magic of Jiuyang. In fact, when Zhang Wuji was practicing the magic of Jiuyang, there were also problems. Finally, in the "hard" bag, he reached the highest level and escaped. Therefore, Wushu, which is often more powerful and deeper, is also accompanied by great risks. Nothing in the world is absolutely perfect, with advantages and disadvantages.