Seeking "9981" novel or comic (best comic)

" 9981 " was a Chinese novel and manga. The novel version of " 9981 " told the story of the main character, Jiu Youzi, who had gone through many hardships in a world where demons ran amok. He overcame many difficulties and finally became a powerful demon. The novel was divided into three parts, each with a different protagonist and storyline. The manga version of " 9981 " was created by the Chinese mangaka Zhao Kai. It mainly told the story of Jiu Youzi becoming a demon. The manga's graphics and plot were very good and loved by readers. If you have any other questions about " 9981 ", feel free to ask me.