Introduction to the main urban area planning model exhibition hall: The three-story main urban area planning model exhibition hall with an area of ​​2,270 square meters displays the giant sand table of Daqing City. The scale of the sand table is the largest in the country, and it is also regarded as the treasure of the town. In order to make up for the shortcomings of not being able to see the whole sand table when looking at it from above, the designers specially built a cantilevered stand on the fourth floor, so that viewers can overlook the entire sand table from the fourth floor. There is a touch screen next to the balcony. If the audience wants to know the specific geographical location of an area, road, lake, etc., they only need to touch the corresponding text on the screen, and the projection of the sand table will be matched and presented individually.