Zhang Zhongjing, also known as Zhang Ji, was one of the most famous herbal doctors in Eastern Han Dynasty. His book Treatise on Febrile and Miscellaneous Diseases was the greatest achievement of the medical theory since Qin and Han Dynasty, which was applied broadly in medical practice. It was also one of the most significant books in medical science history. Owe to his brilliant contribution to medical science, Zhang Zhongjing was called " the medical sage" by the descendants. An eminent musicologist, mathematician and calendarist, who was honored to be "oriental personage of artistic encyclopedia type". Zhu Zaiyu broke through the ancestral rules and the old customs, rebelled Confucian school of idealist philosophy of the Song and Ming dynasties. He held that practice and experiment were very important, exerting his utmost effort in researching for the truth. He completed New Musical Theory, New Mathmatical Theory, Jar-metric Principal, Complete Collection of Temperament, Awakening the World, etc. more than 20 monumental works
