Images have also shown that the second J-31/FC-31 prototype is being transported on Chinese highways, similar to the transportation of the first J-31 prototype in the summer of 2012. The fighter was moved from the Shenyang factory to a testing range in another part of China. China's second fifth generation fighter, the J-31 is a twin engine, medium weight stealth fighter built by the Shenyang Aircraft Corporation. It is undergoing testing, while waiting for firm domestic and export orders. A display floor model of an improved J-31, with a larger fuselage, improved indigenous engines, stealthier features and improved sensors, was prominently displayed at the Zhuhai 2014 Airshow. The second J-31 prototype, incorporating those improvements, is expected to make its first flight soon, if it already hasn't done so. A first flight of the improved J-31, just in time for the 2016 Zhuhair Airshow, would greatly improve its sales prospects at home and aboard.