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"But when it came to a stop and we looked around and everyone was all right, everyone was pretty calm," Epstein said. "It was quite a ride."

"By providing authentic and firsthand information on unmarketable products, we want to make full use of the data analytics of e-commerce platforms and help tap the demand in a more efficient fashion," said Zhang Xinyou, a botanist and academic who was on Alibaba's expert team.

"By the end of August, we are expecting to open 200 more Bingobox stores," said Chen Zilin, CEO of Bingobox.

"China has an ambition in developing its civil aviation industry. Rolls-Royce wants to be part of that ambition and growth," Stein said in Beijing on Friday.

"But we need to pay attention to regulations and the worldwide discussion in this direction should be heard," said Qi, who left Tsinghua University earlier this year to take up his new post.