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"Guazi is the only enterprise in the world to efficiently apply AI technology to the used-car industry," said Masayoshi Son, CEO of SoftBank.

"Five years later, the annual revenue is likely to be more than double the number today," Ren said. The Shenzhen-based company posted 8.5 billion in revenue in 2018, and said earlier that the figure is likely to hit 5 billion this year.

"For a socialist, you've got a lot more confidence in corporate America than I do," Biden said.

"From a research perspective, the US has benefitted from globalization in the past 20 years," Wang said. "Thanks to its imports of consumer products at low prices, the US did not suffer from imported inflation for a long time. However, by threatening to impose higher tariffs on imports from multiple countries, the US could have the opportunity to renegotiate trade agreements with these countries and gain greater benefits."

"Generally speaking, while comprehensively ratcheting up climate action and establishing the mechanism needed to boost high-quality economic development and environmental protection, we need to promote fundamental transitions in the structures of the economy, industry and energy consumption," Li told a news conference.