File photo taken on March 4, 2014 shows U.S. First Lady Michelle Obama talks with students of Chinese Yu Ying School in Washington D.C., capital of the United States. Named in honor of first American President George Washington, Washington D.C. or Washington District of Columbia is the capital of the United States that is located between Maryland and Virginia states. Overseas Chinese, Confucius institutes, giant pandas and Chinatown are characteristic Chinese features that can be find in Washington D.C. (Xinhua/Yin Bogu)