Confucius Old Books Network.
According to relevant information on the Kongfuzi Used Book Network, you can buy the book "The Tao of Gua Li" by Teacher Xu Wensheng on the Kongfuzi Used Book Network.
Xu Wensheng is an expert in Chinese traditional culture management, founder of Tai Chi management theory, deputy director of the Chinese Management Research Center of Tsinghua University, part-time professor of Sun Yat-sen University, and visiting professor of Zhengzhou University. An internationally renowned expert on Yi studies, a researcher of traditional Chinese culture and ancient science and technology, and an expert in innovation management.