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"Concentrated observation of them is needed because if they instead returned home for self-quarantine, there would be great risks of cross-infection among families," said Deputy Director Pang Xinghuo, of the Beijing Center for Diseases Prevention and Control.

"China's moves to tighten its credit system are admirably in tune with its efforts to advance reform and opening-up and develop the Belt and Road Initiative with other international partners," said Wang Jun, a researcher at the China Center for International Economic Exchanges.

"Competent departments must work jointly to enhance oversight and treat foreign and domestic businesses as equals," Li said.

"Companies need to seek refined operations to reduce the cost and then offer better services to retain users," Sun added. "The bike rental fare hike may help companies ease the pressure to turn profitable. However, bike-sharing platforms may also face problems such as the loss of many users. As the ride costs the same or even higher than the bus, shared bikes may lose certain advantages."

"Chinese consumers have already developed the habit of buying almost everything online. The expensive, large-size home appliances can now also be bought with a mouse click, with e-commerce companies building trust with consumers and offering free installation services," said Lu Zhenwang, CEO of Shanghai-based Wanqing Consultancy.