Yu Tuan was young, that is, "learning to raise a child's career, reading widely, being good at remembering and educating, and being able to write poems." When I was young, I decided to study medicine because my mother was ill. Concentrate on reading all kinds of classic works of traditional Chinese medicine, and inherit and develop Zhu Danxi's medical theory. Based on Danxi, his medicine integrates the essence of Zhang Zhongjing, Sun Simiao, Qian Yi and Gao Li, and establishes a set of systematic medical theories. Yu Tuan's great-grandfather Yu Chengzhai studied under Zhu Danxi, a famous doctor in Yuan Dynasty. He has received a lot of personal education and excellent medical skills. His father, Yu Nanxuan, devoted himself to studying medical books when he was young, and his medical skills were superb. His motto is "If you are not a good doctor, you are a good doctor", and his medical ethics is very high. His brother Yu Huaide is also good at Huang Qi. When Tian Min was a child, he suffered from bone rot. Wilder sued him personally and took care of him wholeheartedly. Although he ignored the thick smell of blood, Tian Min recovered from his illness in March. Therefore, Yu Lu's family can be called a "medical family". Yu Tuan is not only brilliant in medical skills, but also noble in medical ethics. Patients seek medical treatment free of charge. In his study, there is a horizontal plaque with the words "Hengdezhai" hanging from the book, which was also posted in the room of "Hundred Words Song".

Yu Lu inherited his grandfather's family studies, followed the legacy of Danxi, learned from others, and was unique, especially good at pulse diagnosis. "There is no test to diagnose life and death." It is very effective to treat constipation with intestinal solvent or enema with instruments. And creatively put forward the medical theory of "two kidneys in total" and the theory of "three jiao points" to guide medical practice, which pays more attention to patients and cures more. Once upon a time, a famous uncle came to see him and asked. When Fang Bo saw Yu Lu, he felt very respected and asked Yu Lu for advice seriously. Seeing his sincere attitude of seeking medical treatment, Jade Group frankly told him the truth of fitness and health preservation, saying, "First, we should control our lust, second, we should guard against sexual anger, third, we should be careful about what we say, and fourth, we should be strict with food and clothing." These are the keys to staying healthy. " Fang Bo was surprised by this.

Yu Tuan wrote a lot in his life, including 8 volumes of Medicine True Story, 6 volumes of Prevention of Pulse Method, and medical works such as Zheng Zhi Zhen Quan, Cang Sheng Si Ming Zhen Compound, Bai Zi Drink, and Banzhai Draft. His medical experience and medical theory are not only spread all over China, but also famous overseas, especially in Japan. According to the biography of Dai Tian San Xi written by Japanese vector Ming Dow, "In A.D. 1448, Dai Tian San Xi traveled to China by boat for twelve years, studied under the Moon Lake and returned with his works." According to the examination, the Moon Laker, whose name is Mingjian Temple,no. Rundezhai, lives in Qiantang, studied medicine in Tianmin, with superb medical skills, and made a living by taking medicine. He has written 9 episodes of Treatment Based on Differentiation of Symptoms and Signs, Yin Jifang and other medical books. The medicine of Houyuehu Lake is widely circulated in Japan. Up to now, Yu Tianmin's works have been used as medical teaching materials in all Japanese traditional Chinese medicine schools, which shows that Juan's medical theory has spread widely and influenced deeply. There are 156 prescriptions in China, which are important works in the medical field. It can be seen that it has made great contributions to the science of traditional Chinese medicine in the motherland.

At the age of 78, Yu Tuan decided to "collect ancient names to treat diseases and compile them into a book", entitled "Ancient and Modern Sages' Medical Cases". It is a great pity that he studied and compiled this masterpiece in his eighties. Although he had written more than half of it, he failed to finish the whole book and died at the age of 80. Eight Pin Guan gold belts were awarded by the imperial court. Later generations Jiang Fang wrote the Preface to the Crown of Yu Tianmin for Yu Xin. Unfortunately, this article has been lost.