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　　On the afternoon of December 19, 2016, Prof. Klaus Hubacek and Associate Prof. Kuishuang Feng from the University of Maryland, USA were invited to give reports entitled "Assessing carbon inquace from local to global" and "China in the Global Supply Chain: Economic gains and environmental losses". A number of teachers and students participated in the seminar. The report was hosted by Professor Liang Qiaomei.