Citizens and visitors walk along the 399.899-meter long 3D ground painting in Wangfujing Street in Beijing on Sept. 8, 2015. It's said that the 399.899-meter long 3D ground painting measured by Beijing Institute of Surveying and Mapping breaks the world record as the current largest 3D painting was 374.43 meters long. (CFP/ Huang Xiaobing)
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