The Art of Longevity appeared in the four novels,"I Live Forever in a Chaotic World","Ming Dynasty Coroner","I Live Forever in the Sky", and "Art of Longevity"! I recommend you to read "I Live Forever in a Chaotic World" first. This book tells the story of the main character, Wei Changan, awakening a progress bar system in the chaotic world. He cultivated the perfected Art of Longevity and became the peak of martial arts. I hope you like this fairy's recommendation. Muah ~😗