Whoever wishes to become a great physician must master the Sylph, Jia Yi, Yellow Emperor's Acupuncture Classic, the Meridian Pathways of Mingtang, the Twelve Meridians, the Three Diagnostic Methods and Nine Indicators, the Five Viscera and Six Bowels, the External and Inner Acupoints, and the Herbal Pairing. They must also be well-versed in the classical formulas of Zhang Zhongjing, Wang Shuhe, Ruan Henan, Fan Dongyang, Zhang Miao, Jin Shao, and other renowned medical scholars. Furthermore, they must possess deep understanding of Yin-Yang astrology, physiognomy, the divinations of the Five Signs on scorched tortoise shells, and the Book of Changes along with the Six Ren system of forecasting. Only with such mastery can one truly be called a great physician. Otherwise, it is like wandering blind in the night every step leading closer to disaster...