Since Tseng was a student, he has been aware of air pollution issues. He has over 10 years of such professional experience. Besides being one of the initiators of “Indoor Air Quality Management Act” in Taiwan, Tseng also examined more than 100 buildings to improve their indoor air quality. He is capable transforming invisible air to something tangible. He is professor at Institute of Environmental Engineering and Management at Taipei University of Technology, director of Taiwan Society of Indoor Environmental Quality and Indoor Environmental Quality Research Center at Taipei University of Technology.