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"Chairs at offices should be designed in such a way that they can help smartphone-using workers to relax," said Gwinner.

"China has just begun the construction of national parks and has much to learn from its international counterparts, especially in the management of outdoor recreational activities," said Dong Erwei, a professor at the university. He is also director of the China International Center for Leisure and Tourism Research.

"China is a huge e-commerce market, with millions of parcels delivered every year. Our technologies can help express companies better distribute parcels when consumers are not at home," Hong said.

"China has the world's richest medical data, and a keen thirst for AI. The government has been creating a good environment for the AI industry to develop, and we also have resourceful AI talents," she 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.