Credible. Mr. Zhang is the dean of Guoxue in Daganmen, the inheritor of Yi-ology culture, an international senior psychological consultant, a master of international relations in Ritsumeikan University, a doctor of Yi-ology in the School of Philosophy of Beijing Normal University, a senior lecturer in the international certification of teaching Chinese as a foreign language in China, a special lecturer in the lecture hall of Guoxue in overseas Confucius Institute, a cultural trainer in China of the Federation of Chinese Business Enterprises in London, and the founder of the curriculum system of Environmental Code, Yijing Fengshui and Wealth Life.