Later, Cao Cao suffered from several attacks of head wind, and all the doctors tried to stop him, but he still showed no regrets. He also said, "Tuo can cure my disease, but he will not cure it for me. He wants to threaten me. If I don't kill him, the disease will be cured." It's hard to recover." It wasn't until this winter that Cao Cao's beloved son Cao Chong fell ill and died without any treatment. At this time, Cao Cao said regretfully: "I regret killing Hua Tuo and causing his son to die of illness."
Hua Tuo had many disciples in his life, among whom Fan A from Pengcheng, Wu Pu from Guangling and Li Dangzhi from Xi'an are all world-famous. In order to pass down his medical experience to future generations, Hua Tuo devoted himself to writing medical books in his later years, including "Qing Sang Jing", "Pillow Moxibustion and Acupuncture Jing" and many other works, which unfortunately were lost.