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"Do you want to take a spur-of-the-moment trip? Join me!" wrote Zhang Weili, 56, on WeChat, ahead of the seven-day National Day holiday early this month.

"Digital economy's contribution to GDP (which was 82 trillion yuan) exceeded 33 percent last year," said Lu.

"Farmers are very clever. ... But they have many problems they cannot solve by themselves. They need the government to help them to solve public problems. This is a public policy problem, not a market problem," he says.

"Even though a lot of money can be made from selling trains, providing maintenance services and selling trains directly in overseas markets can also be profitable and convenient," said Feng Hao, a rail transportation researcher at the National Development and Reform Commission.

"Even though we have spent more than half a year battling a virus whose insidious hallmark is its ability to spread through those with no symptoms, the country has not yet articulated a coherent strategy to test these silent carriers," online media outlet ProPublica said.