Zhonghua Gate (Nanjing City Wall)

Zhonghua Gate is the southern gate of the Ming city wall and the largest castle-style city gate still standing in China. Built in the 14th century when Nanjing was the Ming capital, it is far more than a doorway. It is a deep, layered fortress designed to trap and crush any attacker who broke through the first arch.

A fortress, not just a gate

The gate is built around three successive courtyards, the wengcheng or barbican system, stacked one behind the next. An enemy who forced the outer gate would find themselves penned inside a stone enclosure with defenders firing down from every side. Set into the thick walls are 27 vaulted chambers, the cangbingdong, where soldiers and supplies could be hidden. Estimates suggest the gate could conceal around three thousand troops ready for ambush. Walking through the tunnels and up the ramps, you get a vivid sense of just how seriously the Ming took the defence of their first capital.

Walking the Ming city wall

Zhonghua Gate is also one of the best places to climb onto the wall itself. Nanjing's Ming wall once ran for more than 35 kilometres, and long stretches survive, making it the longest city wall in the world. From the top you look out over the moat, the modern city and the green ridges beyond. Many of the original bricks are stamped with the names of the workshops and officials responsible for them, an early form of quality control you can still read with a careful eye.

What to look for

Spend a little time hunting for those inscribed bricks, climbing the horse ramps that allowed mounted soldiers to ride up, and standing inside one of the hidden chambers to picture the troops once stationed there. The contrast between the heavy grey stonework and the city traffic flowing past outside is part of what makes the visit memorable.

Visiting details

The Zhonghua Gate and city-wall section charges a ticket of around 50 yuan, and the northern part of the gate stays open into the evening so you can see the wall lit up after dark. It is rarely as crowded as the Confucius Temple nearby, so you can explore at your own pace. Wear sturdy shoes, because the ramps and steps are uneven, and bring water in summer when the stone radiates heat.

Getting there

Metro line 1 stops at Zhonghua Gate station, a short walk from the entrance. Allow an hour or two to do the fortress justice, more if you plan to walk a longer stretch of the wall. Pairing it with the Qinhuai River quarter, which lies just to the north, makes for an easy and rewarding half day in southern Nanjing.

Built to last

The Ming builders did not cut corners. The wall's core is packed earth and rubble, faced with large stone blocks and millions of fired bricks, and the mortar famously combined lime with sticky rice, a recipe so durable that long sections have stood for more than six hundred years. Every brick had to meet a set weight and size, and the inscriptions naming their makers meant a faulty brick could be traced back to the responsible workshop, kiln and official. Bricks that failed inspection were rejected and remade. That obsessive quality control, unusual for its time, is a large part of why so much of the wall survives today while many other ancient Chinese walls have crumbled away. It is worth pausing to take in that you are touching some of the most over-engineered fortifications of the medieval world.