Alibaba Group Chairman Jack Ma looks back at a giant electronic screen

Alibaba Group Executive Chairman Ma looks back at a giant electronic screen showing real-time sales figures of the company's Taobao.com and Tmall.com, on the "Singles' Day" online shopping festival, at the company headquarters in Hangzhou

Alibaba Group Executive Chairman Jack Ma looks back at a giant electronic screen showing real-time sales figures of the company’s Taobao.com and Tmall.com, on the “Singles’ Day” online shopping festival, at the company headquarters in Hangzhou, China.

U.S. President Barack Obama and Chinese President Xi Jinping in Beijing

Obama and Xi hold a news conference the Great Hall of the People in Beijing

U.S. President Barack Obama and Chinese President Xi Jinping look down during their news conference in the Great Hall of the People in Beijing.

Unexplored caves in the Lu He Dong cave complex near Fengshan, Gangxi Province, China.

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Adventurers have gone deep underground to discover previously unexplored caves in the Lu He Dong cave complex near Fengshan, Gangxi Province, China.

Pro-democracy protesters watch formal talks between student protest leaders and city officials

Pro-democracy protestors watch formal talks between student protest leaders and city officials on a video screen near the government headquarters in Hong Kong

Pro-democracy protesters watch formal talks between student protest leaders and city officials on a video screen near the government headquarters in Hong Kong, China.

Police officers spray a pro-democracy protester in the face with pepper spray in Hong Kong

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Police officers spray a pro-democracy protester in the face with pepper spray in Hong Kong. Hong Kong has been plunged into the worst political crisis since its 1997 handover as pro-democracy activists take over the streets following China’s refusal to grant citizens full universal suffrage.

A Long March-2C carrier rocket carrying the Shijian-11-07 experimental satellite

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A Long March-2C carrier rocket carrying the Shijian-11-07 experimental satellite flies into the sky at the Jiuquan Satellite Launch Center in China.