Inner-city living in the center of the city north, eastAbout 2,000 meters, 1,500 meters wide north-south, build a wall of floor canopy, is Guanshu or Zhunbing area.

• 内城居于外城内正中偏北，东西长约2000米，南北宽1500米，墙上筑有楼檐，乃是官署或屯兵区。