Is the "Sister Yang" in the episode of "Dragon Slayer" that appeared in the lion slaughter conference a descendant of Yang Guo and the girl?

1, yes.

Finally, when the girl in the yellow shirt left, she said, "After Mount Zhongnan, the tomb of the living dead, the condor heroes disappeared from the rivers and lakes", which directly indicated her identity.

2. The Dragon Slayer by Eternal Adversity is a novel by the martial arts master Jin Yong, written in 196 1, and the third in the series of "The Shooting and Carving Trilogy". The story spans a hundred years, with the rise of heroes and the turmoil in the rivers and lakes at the end of the Yuan Dynasty as the background. The plot revolves around two weapons, the Dragon Slayer and the Heavenly Sword. The first volume tells about Zhang Cuishan, a disciple of Wudang, who was involved in the sword fight. The second volume to the fourth volume tells the story of Zhang Cuishan's son Zhang Wuji's Jianghu career, mainly about the dispute between Zoroastrianism and Wulin in the Central Plains and the confrontation between the rebels and the imperial court. Zhang Wuji, a teenager, is destined to practice martial arts, commanding the pack with amazing martial arts and irreplaceable personality strength. The story also shows the simple lofty sentiments and different spiritual outlook of the heroes in Wulin.