Project overview: the ground and underground double-layer layout of the site, the underground layer is 3.6 meters high, the ground layer is 3.0 meters high. The underground floor is of brick-concrete structure, and the ground floor is of light steel gantry structure. The site is 44.74 meters long and 23.98 meters wide. The construction area is 2143.52 meters, of which the underground floor is 967.76 square meters and the ground floor is 1175.76 square meters. Distinguish the underground training area and the above-ground inspection guidance area, and build simulated houses, simulated blocks, simulated residential buildings, auxiliary facilities and other facilities.