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China Aerospace Science and Industry Corp, one of the nation's major space contractors, began hyperloop research and development, in Wuhan, Hubei province, in July 2017.

Chen at the CAAM said the explosive growth has been brought about because some people rushed to make the most of the current subsidies that are about to be cut at any time.

Chen Shanzhi, vice-president of Datang Telecom Technology and Industry Group, is also clear about the city's advantages.

Chen said China's Belt and Road Initiative and the development of the Guangdong-Hong Kong-Macao Greater Bay brings opportunities for US companies in Guangzhou. Last year, the economic aggregate of the Guangdong-Hong Kong-Macao Greater Bay Area surpassed that of San Francisco and is approaching New York's.

Chen Yanyan, a professor of transport studies at Beijing University of Technology, said that as cities become bigger, a combination of transportation modes, such as subways, buses and bikes, can better meet people's demand for swifter traffic.