Imke Bock-Mobius holds a Ph. D. in physics, worked in China and began active qigong training; back home she studied Chinese language and philosophy. Experienced in other forms of energy and light work, she resides in southern Germany where she teaches qigong, practices shiatsu, and gives lectures at both academic and popular venues. Livia Kohn, Ph. D., is Professor Emerita of Religion and East Asian Studies at Boston University, USA.