In the brief episode of the Manchu Restoration led by Qing loyalist general Zhang Xun in July 1917, then-Premier Duan Qirui ordered a Caudron Type D aircraft piloted by Pan Shizhong (潘世忠) and bombardier Du Yuyuan (杜裕源) of the country's fledgling air force based in Nanyuan airbase to fly to and drop bombs over the Forbidden City; three bombs were dropped, causing the death of a eunuch, but otherwise minor damage.