On 11 August 1941, in what would be the last-recorded dogfight between the Chinese Air Force fighters and the IJN Zeroes before all active Zero squadrons were pulled out of China in preparations for "Operation Z" (the Pearl Harbor attack mission), future Japanese ace-fighter pilots Gitaro Miyazaki and Saburō Sakai were part of the escort of an "Operation 102" bomber-attack and fighter-sweep of Chinese air bases between Chongqing and Chengdu, and encountered Chinese I-153 and I-16 fighters at Wenjiang Airbase; while shooting down all those that managed to take off or strafing those still taxiing down the runways, Saburo Sakai described how five Zeroes then struggled to shoot down the one last opponent still in the air that "was an absolute master" as it "snap-rolled, spiralled, looped and turned through seemingly impossible maneuvers... like a wraith", but Sakai himself only managing to finally shoot down the acrobatic biplane fighter pilot when he was forced to slow-roll in a climb while trying to clear over the top of a hill west of Chengdu; the belly of the Chinese fighter suddenly exposed right into the gunsight of Sakai's Zero, who fired cannon shells that "tore through the floorboards of the biplane", sending it down in a wide spin and exploding as it hit the hillside. Four Chinese pilots were killed in this engagement, including Lt. Huang Rongfa, whose fiancée, Ms. Yang Quanfang, took a pistol and shot herself at the memorial for him and the other martyrs on the 16th of August; under these special circumstances, Ms. Yang and Lt. Huang were buried together at the Chongqing Nanshan Air Force Martyrs Memorial Park.