"Sequel of Knights-Errant Stories", compiled by Zheng Guan-Ying in the late Qing Dynasty, was mainly a collection of masterpieces of Knight-Errantry novel in the Ming and Qing Dynasties. Not bias in any specific books, it not only manifested Zheng Guan-Ying's thought in compiling, but also covered the deficiency that Wang Shi-Zhen's "Knights-Errant Stories" concentrated solely on collecting works in the Tang and Song Dynasties. In addition, the description of knights-errant images in the book was more concrete than that in "Knights-Errant Stories". It also revealed the themes of karma and exhortation to good deeds via fairy spells to respond to the spirit of helping mankind and ethics and morality that Confucianism emphasized. Therefore, it presented the mental tendency of laying stress on both Confucianism and Taoism. Furthermore, knights-errant were endowed the responsibilities to maintain social order and make up for the shortage of law. Since the fierce beasts, corrupt bullies, and evil demons were subject to the deserved sanction, people in the society could be appeased. From the viewpoint of being mediators, knights-errant were more humanistic and considered to be folksier and more persuasive compared to the illusory images of immortal and Bodhisattvas and the real world officials who failed to administer justice. In light of this, the educational function of exhortation that the compilation implied could be more effectively exerted.