Mui taught the spring semester at Shanghai's Tongji University in 1988. There was snow in Shanghai when we arrived. Heat was still a rationed commodity, with no central heating systems allowed south of the Yellow river. Students and faculty alike shivered in their dorms, apartments and classrooms through the winter using down jackets and large covered cups of tea or hot water to survive. As in most of China, residents used coal bricks for heat, and I remember seeing (though no photographic proof) coal being sold in some store fronts of the magnificent buildings of Shanghai's bund. Serving foreign faculty, Mui's apartment had heat, a luxury also availble, no doubt, to the party members that administered the University.