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"But the US Chamber would strongly disagree with a decision to impose sweeping tariffs," Donohue said in a statement released on Thursday.

"By connecting social and retail environments, we will create innovative digital services and delightful experiences for our users, help brands build deep emotional connections with consumers and support the laying of strong foundations for long-term brand growth," said Davis Lin, senior vice-president at Tencent, who is in charge of the company's smart retail strategy.

"Central banks can act quickly to help ease the tightening of financial conditions by injecting liquidity and cutting interest rates, thus preventing a possible credit crunch," said Tobias Adrian, an official at the International Monetary Fund. "In fact, markets have been anticipating aggressive easing by central banks, as reflected in the sharp fall in sovereign bond yields in many countries around the world.

"COVID-19 has created the greatest challenge the world's tourism sector has seen in some time," said Song Rui, director of the Tourism Research Center.

"But the prices will ultimately depend on supply and demand in the domestic market," said Liang of the CAFS.