Zheng Yuan's Collection referred to a collection of novels written by Zheng Yuan. Zheng Yuan was a web novelist in China. Her works were based on fantasy, fantasy, martial arts, and other topics. Her writing style was beautiful and the plot was attractive. Zheng Yuan's collection includes the following works: 1. Demon and Devil Farm 2. Devil of the Netherworld [Nine Darkness Demon Emperor] [Nine Nether Divine Sword] 5. Nine Nether Prodigy [Dragon Riders of the Nine Underworlds] [Nine Nether Sword God] [Nine Darkness Demon Lord] 9. The Heavenly Demon God Nine Nether Divine Technique These works all told the story of the protagonist becoming a powerful Heavenly Demon God through practicing the Nine Nether Divine Technique. It involved magic, fantasy, martial arts and other elements. The plot was very popular among readers.