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"But whether Douyin can maintain this success remains a question, as youngsters' interests can change quickly. It depends on how the platform is going to operate in the long term," he said.

"China is promoting home rentals. This shows the country's concern for its people. We are happy to play a part," he said at the news conference on Dec 20.

"COE is not a very popular measure, and any government that tries to implement this kind of a measure in any other country may lose elections," said Vivek Vaidya, a transport expert.

"By design, Level 3 is a progression, not a rush to normality. It carries forward many of the restrictions in place at Level 4, including the requirement to mainly be at home in your bubble and to limit contact with others," she said.

"By doing such business, more SMEs are setting up their warehouses, customer services and a complete supply chain in foreign markets. Gradually, SMEs are able to serve customers overseas, just like big firms," Lou said.