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Zhu Zhen-heng was born in Yiwu, Wuzhou (now Yiwu County, Zhejiang Province). Because he lived in Danxi for a long time, he was respectfully called "Danxi Weng".

Zhu was smart and eager to learn since childhood. When he grew up, he studied the classics, intending to pass the imperial examination to become an official. Later, he went to Mount Bahua to study morality and life under the Neo-Confucianist Xu Qian He said that he was deeply knowledgeable in Neo-Confucianism. Give up the career of raising children and devote yourself to medicine.

In the year of Taiding Yichou (1325), Xia worshiped Luo Zhi-ti as his teacher. The Luo family took Liu Wan-su and Li Dong-yuan, Zhang Zi-he, and then taught Danxi with the interpretation of the classics and their meanings. Zhu returned to his hometown after completing his studies. Within a few years, his medical reputation has greatly increased.

Danxi is proficient in writing and ancient philosophy, and is good at using the philosophical thoughts and Neijing in books such as Book of Changes and Book of Rites He has made great contributions to medical theory, especially his "Yang has more than Yin and insufficient Yin" and "The theory of phase fire", which have a profound influence on later generations.

Dan Xi is the author of Gezhi Yulun, Jufang Fahui, Bencao Yanyi Buyi, disease caused by cold Dispute , Waike Jingyao New Theory . In addition, books such as Pulse Causes and Treatment, Danxi Xinfa, and Jingui Gouxuan are also signed with the name of Danxi. But it may have been edited by a disciple, or it may have been a work of false trust.

Danxi In the era when Tongfang was popular and warm dryness became a habit, he put forward the "theory of excess of yang and deficiency of yin" and the "theory of phase fire", advocating the protection of health in terms of health care. Cherishing the essence of yin, he advocated nourishing yin and reducing fire in the treatment of diseases, and made important contributions to the enrichment and development of medical theory. Later generations called it the "Yin Nourishing School" and was listed in "Jinyuan Sidajia "One of the symbols of people's admiration and praise for him. However, not paying enough attention to yang qi would be one-sided.