München (2007): Department for Asian Studies, Sinology, Ludwig-Maximilians University of München, Munich, 2.–3. November 2007: "The East Asian Mediterranean – Maritime Crossroads of Culture, Commerce, and Human Migration".
Title of paper: "An Investigation on the Changes of Ryūkyū's Tribute to China during the Qing Dynasty"
Tübingen (2007): Institute of Chinese and Korean Studies, Eberhard Karls University of Tübingen, Tübingen, 29.–30. March 2007: "Monies, Exchange Rates, Prices and Wages".
Title of paper: "Exchange Rates between Copper Cash and Silver Tael during the Guangxu Period (1875-1908)"
Budapest (2007): University ELTE Budapest, Institute for East Asian Studies, in cooperation with the Confuzius-Institute, Budapest, Ungarn, 05.–06. March 2007.
Title of paper: "Trade between China and Ryūkyūs during the Qing Dynasty"
Marburg (2007): FG Sinologie, Philipps-Universität Marburg, Marburg, 22.–23. January 2007: "Das Ostchinesische 'Mittelmeer' um 1400-1800: Maritime Schnittpunkte von Waren, Personen, Wissen und Kultur".
Title of presentation: "Handelsbeziehung zwischen China and Ryūkyūs 1644-1876"
Beijing (2004): Forum of history of science and technology at Tsinghua University, Beijing, 17. November 2004.
Topic of lecture: "Industrial Monument and Musealization"
Berlin (2004): Workshop of VW research project Chinese Everyday Technologies, Berlin, March 2004
Topic of presentation: "Field Research in the Mining Museums"
Berlin (2003): Friedrich-Alexander-University of Erlangen and Technical University of Berlin, Berlin, 18.–19. February 2003: IQN-Workshop "Exchanges of Knowledge between China and the West: Historical and Philosophical Dimensions "
Title of presentation: "Concepts of the Musealization of German Hard Coal Mining"