File photo taken on Feb. 9, 2015 shows local children learn Chinese calligraphy at a community center in Washington D.C., 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)