Fidel Castro, seen here in July, was awarded the Confucius Peace Prize, China's version of the Nobel Prize. He was not on hand to receive the award at a ceremony in Beijing on Tuesday. Alex Castro/AP hide caption

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Zhuang Qiuli and her boyfriend Feng Tao sit on the bed in their basement apartment two floors below a posh condominium. Since this photo was taken, the couple has moved above ground. Sim Chi Yin/VII hide caption

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Relatives of deceased organ donors mourn for them at a ceremony unveiling a monument for the organ donors in April in Chongqing, China. Feature China/ Barcroft Media/Barcroft Media/Landov hide caption

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Chinese customs officials, like the ones shown here in August at the Lukou International Airport in Nanjing, have broad powers to confiscate items. One woman who had copies of her father's memoir seized has sued the government. Xie Mingming/Xinhua/Landov hide caption

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Federation of Students representatives Alex Chow Yong-kang (second left), Eason Chung Yiu-wa (second right) and Nathan Law Kwun-chung (right) talk to the media before trying to board a plane to Beijing on Saturday. They were told that Beijing authorities had revoked their travel documents. Jerome Favre/EPA/Landov hide caption

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A jogger goes for a run amid heavy smog in Shanghai on Wednesday. China has for the first time agreed to limit its carbon emissions, but critics are questioning whether the move goes far enough. AFP/Getty Images hide caption

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Chinese President Xi Jinping and President Obama, seen here during a ceremony at the Great Hall of the People in Beijing, announced pledges to reduce greenhouse gases. HUANG JINGWEN/Xinhua /Landov hide caption

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U.S. President Barack Obama, right, smiles after a group of children waved flags and flowers to cheer him during a welcome ceremony Wednesday with Chinese President Xi Jinping at the Great Hall of the People in Beijing. In a surprise agreement late Tuesday, China agreed to a first-ever target for capping its carbon emissions, while the United States pledge to cut faster than previously planned. Andy Wong/AP hide caption

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Russia's President Vladimir Putin (right) helps put a shawl or coat on Peng Liyuan, wife of China's President Xi Jinping, as Xi talks to President Obama during a fireworks show celebrating the Asia-Pacific Economic Cooperation session in Beijing. Reuters/Landov hide caption

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An international tariff on high-tech goods could be rewritten, thanks to negotiations in China. Here, men use smartphones in Beijing last month, days after Apple released its iPhone 6 in the Chinese market. GREG BAKER/AFP/Getty Images hide caption

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President Obama arrives at the Beijing airport Monday. Speaking at the APEC summit, the president unveiled a new deal to ease visa restrictions between the U.S. and China. Lintao Zhang/Getty Images hide caption

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Secretary of State John Kerry and Chinese Foreign Minister Wang Yi meet on the sidelines of the Asia-Pacific Economic Cooperation (APEC) meeting in Beijing on Friday. Beijing and Washington backed an anti-corruption pact. Reuters/Landov hide caption

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Visitors walk past a portrait of late communist leader Mao Zedong on Tiananmen Gate in Beijing on Sept. 30, the eve of National Day. Greg Baker/AFP/Getty Images hide caption

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