According to Zhai Zhili's personal data, Zhai Zhili is an outstanding Yi-ology lecturer at Renmin University. After studying under the famous Taoist master Mr. Shao for decades, he has formed his own complete Yi-ology system. He has profound attainments in the Book of Changes. Therefore, Zhai Zhili's knowledge and experience of the Book of Changes are authentic. He is a famous Yi-ology lecturer at Renmin University. After studying under the famous Taoist master Mr. Shao for decades, he has formed his own complete Yi-ology system. He has profound attainments in the Book of Changes. Therefore, Zhai Zhili's knowledge and experience of the Book of Changes are authentic.