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"China's pet food market has seen more and more products in recent years to cope with the rising demand of middle-class pet owners," said Li.

"Currently, passenger load factors on most flights are not high. This is an innovative value-added product. Passengers will feel more comfortable and carriers can increase revenue by selling extra seats to the same passenger," said Lin, who is also a columnist at Carnoc.com, one of China's biggest civil aviation websites.

"China's fast-growing digital economy has sharpened the country's competitive edge in industry and created favorable conditions for foreign businesses to invest in more areas," he said, adding that 4G-and 5G-based digital infrastructure is a solid foundation that facilitates rapid growth of artificial intelligence, big data and diversified online services.

"China reserves the right to react," Wang told reporters at a regular news briefing in Beijing.

"China will continue its proactive participation in the global governance of the world's intellectual property," Chen was quoted by China Central Television as saying.