Originated from Yu: In the era of the Yellow Emperor in ancient times, there was a medical officer named Yu Gan, who was the ancestor of Yu. The descendant of Yu Gan is said to be surnamed Yu. About 3000 years ago in the Southern Song Dynasty, there was a descendant named Yu Zun, who was smart and eager to learn, and was promoted to a scholar. He is well versed in the world and knows everything. The emperor likes him to pretend.

Yu, give him the surname Yu, and his descendants will pass on the surname Yu.

Second, the county hall number

Jiangxia County in the Han Dynasty is now Yunmeng County in Hubei Province.

Third, celebrities of past dynasties.

Jade statue-the word is talented, and the number is rocky. In the Southern Song Dynasty, Zhao Ding was curious about language because of human nature, and recommended provincial orthography to his secretary. The following advocates and discusses Huaining County, Zhou Shu, with Hengzhou as the judge. After Qin Gui's death, he became a big official and transferred to the Ministry of Industry as the foreign minister, knowing that qi zhou and Xiao Zong acceded to the throne, which was used to promote Changping in eastern Zhejiang and made great achievements. Yu Zun is good at learning from others' strengths, and tasting the bid and Zhang Jiucheng Jinshi is the first. It really happens. There are The Analects of Doctrine of the Mean University and Yuquan Quotations.

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Yu Chang-Jia Yan, a new figure in Qing Dynasty. He studied medicine and became a famous doctor in the early Qing Dynasty. In the treatment of excessive qi. There are many new discoveries in the study of Treatise on Febrile Diseases, including Treatise on Febrile Diseases and Yimen Law, as well as examples of treating diseases in Yicaocao. Metaphorically, these three books are called three kinds of medical books, which are one of the most important works of TCM. At the age of 80, he predicted death and died by sitting on the table.