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"Cities should make data available so academics and researchers can analyze it. You can't manage what you can't measure," he said.

"China-US relationship is one of the most important bilateral relations in the world, for which economic and trade cooperation is the most active and lasting driving force," Hong said.

"Chinese consumers, especially those born in the 1980s and 1990s, love living a quality life … they like traveling, caring about their individuality, and have different pursuits to match their lifestyle. More importantly, they love their cultural identity and are willing to show it," she said.

"China will continue to speak for Caribbean countries including Trinidad and Tobago on multilateral occasions and hopes that Trinidad and Tobago will play a positive role in promoting China's cooperation with the Caribbean and Latin American countries" Xi said.

"Cosmetics is not a necessity. There will be a phase of delayed consumption due to the epidemic. Once the contagion is over, makeup sales are expected to see a big rebound," said Neil Wang, president of Frost & Sullivan China, a consultancy.