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"But now the global industry reaches a consensus that the real potential lies in the marriage between big data and the real economies," Wang said.

"By hammering on each wooden railroad tie, workers can tell how much it has eroded and when to replace them with new ones," Dong said, adding a routine check of the ties is arranged once a month.

"China is huge, even if it's doubling its visitors, we will be still less than 1 percent of all the Chinese overseas tourists, there are just so many Chinese tourists," said John McCallum, Canada's ambassador to China. "We just need to convince the Chinese people, we just need to welcome them. We have visa functions to service them. I am very confident we'll hit the target."

"Cheap and abundant labor is the most often-mentioned comparative advantage of developing countries. However, this has not been the only reason for the robust development of China over the past four decades," said Fan, also chairman of the China Development Institute.

"By singling out China from travel bans, we are, effectively, penalizing it for openly reporting and sharing data about the epidemic. … This could diminish countries' willingness to be transparent about outbreaks and allow diseases to spread before outbreaks are uncovered, which would make everyone less safe."