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At the annual Berkshire Hathaway shareholders meeting earlier this month, chairman Warren Buffett heaped praise on the success of Amazon and the smarts of CEO Jeff Bezos. On Tuesday, Bezos returned the favor, telling shareholders at his own meeting how much it meant to be complimented by the fellow billionaire.

At present, China is the dominant nation in table tennis, having won the vast majority of medals since the sport was introduced in the Olympics in 1988.

Atlas 900 is dubbed by Huawei as the world's fastest AI training cluster and its application in Peng Cheng Lab, Guangdong province, demonstrates the strides the company has made in AI chip R&D.

At the end of last year, the National Energy Administration issued a number of plans on the future development of wind power, solar power and renewable energy.

At the center, two major events will help shape the country's bumpy election year: the impeachment trial in the Senate in January that Trump is widely expected to survive and the highly competitive Democratic primaries beginning in early February.