Chinese inventor Tao Xiangli welds a component of his self-made robot in the the yard of his house in Beijing on May 15

Men using sledgehammers on a Maserati car outside the Qingdao International Convention Center in Qingdao, Shandong province, on May 14, 2013.

Crowds looking at the badly damaged Maserati.

A view of the Yueyaquan Crescent Lake, near the city of Dunhuang in China's northwestern Gansu province, on May 12, 2013.

Camels at rest in the desert near Dunhuang.

A man smokes a cigarette near the Yueyaquan Crescent Lake.

A Muslim food vendor cooks at his stall in Dunhuang.

A guide leads camels near the Yueyaquan Crescent Lake.

Tourists on traditional boats sail in the Beihai military water tunnels on the island of Nangan in the Matsu archipelago, off northern Taiwan, May 8.

The Beigan airport is seen from the Mt. Bi on the island of Beigan in the Matsu archipelago, off northern Taiwan, May 8. The Matsu archipelago, which was a front line against China, is now a military tourist spot.

Soldiers prepare to operate a U.S.-made 240 mm Howitzer M1 during a military drill on Nangan in the Matsu archipelago, off northern Taiwan, May 8.

A soldier prepares to operate a U.S.-made 240mm Howitzer M1 during a military drill on Nangan in the Matsu archipelago, off northern Taiwan, May 8.

Tents outside a hospital light up at night after Saturday's earthquake hit Lushan county, Ya'an, Sichuan province, on April 22. Hundreds of survivors of an earthquake that killed nearly 200 people in southwest China pushed into traffic on a main road on Monday, waving protest signs, demanding help and shouting at police. The Chinese characters on the tent read "Disaster relief".

Medical personnel work with a flashlight in a temporary settlement in Lingguan Middle School in Baoxing county of Yaan, southwest China's Sichuan province, on April 21.

Chinese soldiers cook breakfast in a rescue camp in Taiping town, Lushan County, Sichuan Province, China, on April 23.

Residents gather around a fire outside damaged homes in Taiping town, Lushan County, Sichuan Province, China, on April 23.

People gather at a power supply station in a temporary settlement in Lingguan Middle School in Baoxing county of Yaan, southwest China's Sichuan province, on April 21.

A man works in a shed at a temporary settlement in Lingguan Middle School in Baoxing county of Yaan, southwest China's Sichuan province, on April 21.

People fall asleep at the power supply station at a temporary settlement in Lingguan Middle School in Baoxing county of Yaan, southwest China's Sichuan province on April 22.

Medical personnel take a break to eat in disaster-hit Ya'an, southwest China's Sichuan province, on April 21. Clogged roads, debris and landslides impeded rescuers as they battled to find survivors of a powerful earthquake in mountainous southwest China that has left at least 188 dead.

Earthquake survivors queue for free water on April 22, in Lushan of Ya An, Sichuan Province of China.

Two earthquake survivors eat instant noodles outside the tent in a middle school on April 22, in Baoxing county of Ya An, China.

Two girls hold boxes of food at a temporary settlement in the disaster-hit area in Ya'an, southwest China's Sichuan province, on April 21.

An earthquake survivor sits outside a tent in a middle school on April 22 in Baoxing county of Ya An, China.

Motorists drive with their lights during a heavy sandstorm in Yecheng county, in northwest China's Xinjiang Uygur Autonomous Region.

Commuters travel during a heavy sandstorm in Yecheng county, northwest China's Xinjiang Uygur Autonomous Region.

Motorists drive with their lights during a heavy sandstorm in northwest China's Xinjiang Uygur Autonomous Region.

A scene from daily life outside homes is seen in Hongcun village of Huangshan City in east China's Anhui Province, April 13.

A polluted stream which has turned white in Dongchuan district of Kunming, Yunnan province, March 20. According to local media, the source of the pollution is waste water discharged by nearby mining industries.

Farmers dig ditches from a white polluted stream to farm fields for irrigation in Dongchuan district of Kunming, Yunnan province, March 21.

A villager carries buckets of water to be used for drinking from a white polluted stream in Dongchuan district of Kunming, Yunnan province, March 20.

A villager holds two bottles of water, one from the polluted stream, left, and the other normal mineral water, in Dongchuan district of Kunming, Yunnan province, March 21.

Rescuers search for people after a building collapsed on March 27 in Chengdu, China. The building was slated to be demolished and it was uncertain if there was anyone in or near the building when it collapsed.

Medical staff wait as rescuers search for buried people after a building collapsed on March 27 in Chengdu, China.

Rescuers search for buried people after a building collapsed on March 27, in Chengdu, China. T

Chinese President Xi Jinping and First Lady Peng Liyuan bid farewell as they board their plane to depart from the Julius Nyerere International Airport in Dar es Salaam, Tanzania, on March 25, 2013.

Peng Liyuan observes a moment of silence during a visit to Gongo la Mboto cemetery, where Chinese workers who died while constructing a railway are buried, on the outskirts of Dar es Salaam on March 25, 2013.

South Africa's President Jacob Zuma shares a joke with Peng Liyuan during an official lunch hosted by Zuma and his wife in Pretoria on March 26, 2013.