China

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U.S. first lady Michelle Obama, center, her daughters Sasha, second left in front, Malia, front left, are greeted by Tibetan students as they arrive at a Tibetan restaurant for lunch in Chengdu in southwest China's Sichuan province Wednesday, March 26, 2014. (AP Photo/Andy Wong)

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U.S. first lady Michelle Obama, second from left, her daughters Sasha, left, Malia, third from left, and her mother Marian Robinson, second from right, look at the pandas as they visit the Giant Panda Research Base in Chengdu in southwest China's Sichuan province Wednesday, March 26, 2014. (AP Photo/Andy Wong)

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A giant panda sleeps on the los as U.S. first lady Michelle Obama, her daughters Sasha, Malia, and her mother Marian Robinson visit the Giant Panda Research Base in Chengdu in southwest China's Sichuan province Wednesday, March 26, 2014. (AP Photo/Andy Wong)

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U.S. first lady Michelle Obama, left, is greeted by Tibetan students as they arrive to a Tibetan restaurant for lunch in Chengdu in southwest China's Sichuan province Wednesday, March 26, 2014. (AP Photo/Andy Wong, Pool)

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U.S. first lady Michelle Obama, center, receives a Tibetan scarf as she and her daughters Sasha, Malia, and mother Marian Robinson arrive to a Tibetan restaurant for lunch in Chengdu in southwest China's Sichuan province Wednesday, March 26, 2014. (AP Photo/Andy Wong, Pool)