a北京之墙是目前国内最长的一段涂鸦艺术墙,位于北京市海淀区人民大学南路,长730米,平均高2.5米。 Wall of the Beijing is a present home longest section of doodle art wall, is located south Beijing Haidian District People's University the road, the length 730 meters, average height 2.5 meters. [...