CHONGQING (CQNEWS) -- Many landmark buildings have been built in Chongqing which is a well-arranged city, and have been praised by people who have been to here. In the minds of local people, how to interpret the urban footprints? Wang Jiang, a native singer of Chongqing, has spent more than 20 hours and 200 boxes of staples on his dining table to create a “3D Chongqing”.