In the early nineteenth century, the Qing dynasty faced a chronic problem along its southern coast: a navy too small to police the territory it was meant to protect. Pirates — some commanding fleets large enough to challenge imperial warships — operated almost freely in the waters around Lantau Island. The solution the government chose was architectural. Rather than building more ships, it built more fortifications. Tung Chung Battery, completed in 1817, was part of this strategy. Positioned a kilometre north of the companion Tung Chung Fort, the battery consisted of two coastal artillery cannon emplacements and seven guard houses. The cliff site was chosen for visibility: from that height, lookouts could spot approaching vessels with enough warning to prepare a response. The battery and fort together formed a defensive system for Tung Chung Bay, with the fort handling garrison troops and the battery handling the water.

How long the battery was in active use is not precisely recorded, but by the time Britain took possession of the broader Hong Kong territory in 1841 and the New Territories lease followed in 1898, the strategic landscape had shifted entirely. The Qing military presence on Lantau faded, and the battery fell out of use. It was not until 1980 that it was formally rediscovered and documented. Two years later, Hong Kong's Antiquities and Monuments Office declared it a monument, protecting it from the kind of demolition that had claimed so many other historical structures during the city's rapid postwar development. In November 1997, marking Hong Kong's return to Chinese sovereignty, the site was included in a heritage celebration tour of North Lantau organized by the AMO, culminating in a performance of traditional Cantonese opera at the nearby fort.

Stand at the Tung Chung Battery today and something immediately feels wrong with the geometry. The cannon emplacements, positioned to look out over Tung Chung Bay, now face Hong Kong International Airport. The airport — built on land that includes the leveled island of Chek Lap Kok — was completed in 1998 as part of the Airport Core Programme, one of the largest civil engineering projects in Hong Kong's history. Where the Qing gunners once watched open water, there are now runways, taxiways, and the ceaseless movement of aircraft. The bay the battery was built to defend is gone. The irony is complete and permanent: a monument to coastal defense, surrounded by the infrastructure that buried the coast it was meant to protect.