Outside the children’s hut Peggy sat with one of the four-year-olds, teaching him to read. I called to her, but she was too engrossed in the book to hear me. Peggy’s parents would take weeks to travel from Tsingtao, and I would be back to look after her. If Lunghua was my real home, Peggy was my closest friend, far closer now than my mother and father could ever be, however hard the missionary women tried to keep us apart. We often quarrelled, but in the dark times Peggy had learned to rely on me and control my leaping imagination.

I passed the kitchen garden behind the hospital, with its rows of beans and tomatoes. Peggy and I had grown them to eke out our rations, fertilising the ground with buckets of nightsoil that we hoisted from the G Block septic tank, the only useful product of the Vincents’ existence. Mrs. Dwight stood on the hospital steps, lecturing a young Eurasian whose father had been chauffeur to the Dean of Shanghai Cathedral. A reluctant orderly at the hospital, he would once have deferred meekly to Mrs. Dwight, but I could see from his bored stare that he was no longer impressed by her moralising talk. British power had waned, sinking like the torpedoed hulks of the Repulse and the Prince of Wales, and he could choose to become a Chinese again. As David’s father often reflected during our chess games, the Japanese attack on Pearl Harbor had marked the first revolt by the colonised nations of the East against the imperial West. Shanghai, which had endured throughout the war, might have changed more than I realised.

Leaving the road, I turned my back on the camp and stepped into the deep grass that ran towards the canal marking the southern perimeter of the airfield. A cloud of mosquitoes rose from the stagnant water, greeting me as if I were the first person to enter this empty world. Dragonflies hunted the lacquered air, swerves of electric blue reflected in the oil leaking from a bombed freighter at Nantao.

A sunken Japanese patrol boat lay in the canal, its machine gun pointing skywards from the armour-plated turret. Already sections of the wooden decking had been chopped into firewood by the returning Chinese villagers. Strafed by the American Mustangs before the crew could take cover, the craft was dissolving into the soft mud of the canal bottom. Only the Japanese soldier lying face down in the shallow water was still himself, the brass buckles of his canvas webbing polished by the stream. I stood on the bank above him and watched the water lift the hairs from his scalp. I could see each of the ulcers on his neck and the swollen stitching of his coarsely woven shirt. Water beetles raced between his fingers, sending shimmers of light into the air, as if this dead soldier were tapping the underside of the surface and sending out some last message.