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"Given the differences in their business models, Youon will be little affected by the rising public bicycle sharing businesses in China," he said.

"For international brands which have entered the Chinese market, duty-free stores provide more channels and opportunities for them to enjoy the dividends in this broad market," said Chen Wen, principal of leading consulting company Oliver Wyman.

"For those overseas nonprofit organizations, large foreign trade enterprises that participate in the expo and join our service platform in Shanghai, we offer monetary support for them to conduct substantive business activities," said Tian Guofeng, deputy secretary-general of CATS.

"Furthermore, China is shaping up to be the world's second-largest economy. These people have not experienced material shortage and they have no intention to do so," Feng added.

"Flying cars will effectively tackle traffic woes and will definitely have a huge impact on society, the economy, safety and the environment," said Zhang Yangjun, with Tsinghua University.