I recommend "Primordial Immortal Emperor" and "Refined Stars". Both novels have the plot of the protagonist cultivating the Nine Heavenly Stars Art. <Immemorial Immortal Emperor> told the story of the Immortal Emperor Duan Chen's soul crossing over to the Qianwu Continent to cultivate the Nine Heavenly Stars Technique after he died in the Immortal World, while <Qi Refining Stars> told the story of the thirteenth young master of the Qi Refining Family, Li Xiaofei, setting off on a journey to refine the Nine Heavenly Stars. I hope you like this fairy's recommendation. Muah ~😗