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"Do they want one of their policy areas to take the lead? Do they want the new nitrogen convention? Or is it a case of a coordination mechanism bringing together between those conventions? As scientists we brought all that on the table. It's now the job of the countries to give us their views," he said.

"Eyeing the world's highest standards, Shenzhen is striving to enhance its stable, equitable, transparent and predictable business environment," Yang said.

"Despite their flag-bearer status in leading some of the best digital practices, the lion's share of users for Alibaba and Tencent are still in China. That means Chinese firms are temporarily ruled out of the possibility of launching a digital currency of similar global influence," said Guo Yuhang, chairman of Starwin Capital and head of the China Blockchain Application Center, a nonprofit organization.

"Even in past years we've seen a lot of online shopping on Thanksgiving," she said. "This year we saw even more."

"Didi will involve ofo into its own algorithmic model via artificial intelligence techniques and provide real-time travel options to users," said Neil Wang, China president at consultancy Frost & Sullivan.