
In this photo released by China's Xinhua News Agency, earthmovers remove rocks and mud on the scene where a landslide hit a mining area in Maizhokunggar County of Lhasa, southwest China's Tibet Autonomous Region, on March 29, 2013. The large landslide trapped dozens of workers in the gold mining area, state media reported. (Associated Press/Xinhua)

In this photo released by China's Xinhua News Agency, earthmovers remove rocks and mud on the scene where a landslide hit a mining area in Maizhokunggar County of Lhasa, southwest China's Tibet Autonomous Region, on March 29, 2013. The large landslide trapped dozens of workers in the gold mining area, state media reported. (Associated Press/Xinhua)

ASSOCIATED PRESS LOCK STEP: Chinese paramilitary police march near the Great Hall of the People in Beijing. China plans to increase its defense spending this year by 7.5 percent.

** FILE ** China's military is seeking to purchase an unspecified large number of Russia's next-generation Saturn AL-117S jet engines, Russian officials are quoted as saying. The engines reportedly are used in at least one of the prototypes of the newest Chinese fighter, the stealth J-20 (pictured before a runway test in Chengdu, China, in January). (Kyodo News via Associated Press)

China’s new UCAV, a small bird-like drone shown during a recent military show at Zhuhai (Source: Chinese Internet via the Washington Free Beacon)

China’s new UCAV, a small bird-like drone shown during a recent military show at Zhuhai (Source: Chinese Internet via the Washington Free Beacon)

** FILE ** In this Feb. 11, 2012, photo, panda reaches for Prime Minister Stephen Harper at the Chongqing Zoo in Chongqing, China. (AP Photo/The Canadian Press, Adrian Wyld)

** FILE ** In this Feb. 11, 2012, photo, panda reaches for Prime Minister Stephen Harper at the Chongqing Zoo in Chongqing, China. (AP Photo/The Canadian Press, Adrian Wyld)

Chinese President Xi Jinping (right) shakes hands with U.S. Treasury Secretary Jack Lew during the American official's visit to the Great Hall of the People on Tuesday, March 19, 2013, in Beijing. Mr. Xi said China wants strong ties with Washington as he held talks with Mr. Lew in Mr. Xi's first meeting with a foreign official since being appointed president. (AP Photo/Feng Li, Pool)