THE NANJING’ WALL EXPERIENCE
Today the 600-year-old city wall of Nanjing still stands.
Different from ancient city walls in Beijing and Xi'an, its design and construction was unique and changed the old ways of equilibrium and symmetry. The construction concentrated on military defense because the city was at the foot of a mountain—a natural barrier to control the commanding elevation with the river as its natural city moat. Because of this, the 60-square-kilometer Nanjing city became strategically located and difficult to reach.