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  1. 18 hours ago · Jin Guantao, a professor of the Institute of Chinese Studies at the Chinese University of Hong Kong, Fan Hongye, a research fellow with the Chinese Academy of Sciences' Institute of Science Policy and Managerial Science, and Liu Qingfeng, a professor of the Institute of Chinese Culture at the Chinese University of Hong Kong, assert that the latter part of the Han dynasty was a unique period in the history of premodern Chinese science and technology.