A 600-square-kilometer zone located approximately 300 kilometers southwest of Beijing has been granted approval as the largest drone-testing airspace in north China. The zone, spanning an area of 25 by 23 kilometers, allows flights up to 4,000 meters, surpassing the standard 3,000-meter limit for low-altitude airspace. This airspace in Shijiazhuang, capital of north China's Hebei Province, is designed for trial flights of all manned and unmanned aircraft, including large industrial drones. It is expected to meet the demands of aviation emergency response, air transport, weather modification, low-altitude tourism and pilot training.