Yang Li, a master of Chinese studies, a famous Yi-ology scholar, a doctor of traditional Chinese medicine, a writer, a historical and cultural scholar, the president of the Beijing Zhouyi Research Association and a professor of the Chinese Academy of Traditional Chinese Medicine, has studied the Book of Changes for 50 years and taught graduate students the Book of Changes and Huangdi Neijing for 26 years, and has a profound understanding of the Book of Changes. Starting with the wisdom of the Book of Changes, this book has made a superb exposition on the business strategy, life wisdom, life philosophy, speculative wisdom, management methods, planning expediency, military strategy, artistic wisdom and scientific thinking of the Book of Changes, which is quite authoritative and practical. Professor Yang Li is an outstanding representative of Yi-ology and traditional Chinese medicine, and has made great contributions to the application and development of Yi-ology. He is currently the chief health expert of Chinese medicine in China. This book has outstanding innovations and breakthroughs in the development and application of the Book of Changes, which reflects the superb level of Professor Yang Li's research on the Book of Changes. I believe this book will bring unprecedented enlightenment to readers.

Professor Yang Li is knowledgeable and proficient in the culture of literature, history, philosophy and medicine. At the end of 1980s, Zhouyi and TCM became famous at home and abroad. Then, he studied hard in Peking University Library for 20 years, and completed six million-word masterpieces, such as Five Years of Cultural Classics in China, Five Years of Scientific Classics in China and Five Years of Literary Classics in China, which made outstanding contributions to the promotion of Chinese culture and played an important role in the theory and application of Yi-ology.