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"Encouraging more Chinese enterprises to issue yuan-denominated bonds in foreign countries could be another path to drive the opening-up," Zeng said.

"Don't let it dominate you. Don't be afraid of it," he urged Americans in his homecoming speech, referring to the virus.

"Faced with low or even zero growth, what we need to change first is how to meet the challenges in terms of market, customers and business," said Chen in a recent review with China Daily.

"Direct saliva testing can address bottlenecks of time, cost and supplies. Our test also has unique features that enable fast and frequent testing on a large scale," said Martin Burke, a chemistry professor who helped design the test.

"Delivery drivers constantly go through alleys and streets. They can serve as mobile patrols for the urban management department," Guo said. "Their participation will improve the efficiency of city governance."