Land Research Center of Trier University of Applied Science and Technology, Head of China Department. Lecturer in the Department of Environmental Economics and Law of the School of Environment, Trier University of Applied Sciences, Germany, and head of the Chinese Department of the Land Research Center. He was responsible for important projects such as the research on the surrounding environment of the city funded by the German Federal Ministry of Education and Research, and the conceptual planning of the Xi'an Environmental Education Center funded by the German International Cooperation Agency.