Although Guo Jing is a disciple of the Seven Monsters in the South of the Yangtze River and Hong Qigong, his internal strength mainly depends on Hong Qigong. Seven eccentrics in the south of the Yangtze River taught Guo Jing some moves, while Hong Qigong taught him internal skills. Hong Qigong also taught Guo Jing to fight the dragon with eighteen palms, so Guo Jing's martial arts is full of masculinity. Yang Guo is an ancient tomb school kung fu, so there will be some yin in kung fu. Yin Qi here refers to the Yin Qi of women. After all, the ancient tombs are full of women, and the cultivation methods are tailor-made for women. Later, after Yang Guo broke his arm, he practiced with the condor, so there were some evils in his kung fu, so Yang Guo's kung fu was not pure. Let's take a look at Zhang Wuji's kung fu, whether it's the Seven Injuries Boxing and the achievement method taught by the Golden Lion King, or his own secret practice of Gankun's great move and Jiuyang's magical power. Generally speaking, every martial art he has learned is pure Yang Kung Fu. Zhang Sanfeng thinks that Zhang Wuji and Guo Jing are very similar, because both Zhang Wuji and Guo Jing practice masculine methods, so both temperament and moves are full of awe-inspiring justice. Finally, Zhang Wuji, whose nature is pure, is actually very similar to the simple and honest Guo Jing. Both of them are ignorant and have no scheming, so Zhang Sanfeng will think they are very similar. Yang Guo is also upright, but Yang Guo has both good and evil, not pure benevolence and righteousness, and Yang Guo is very smart, unlike Zhang Wuji and Guo Jing, which is why Zhang Sanfeng will not associate Zhang Wuji with Yang Guo.