The China Meteorological Administration has pioneered its inaugural large-scale unmanned aerial vehicle (UAV) observation experiment on the Northeast Cold Vortex. Leveraging the advanced 'Haiyan' II UAV, equipped with an array of sophisticated observation devices, the experiment conducted detailed observations of the vortex. The endeavor successfully garnered a substantial volume of valid data, poised to enhance the precision of weather forecasting and disaster warning capabilities. This wealth of information will fortify our efforts in pinpointing the rainstorm center, forecasting the intensity of heavy precipitation, and identifying severe convective weather patterns. Concurrently, this experiment heralds a new era for the commercialization and public service applications of the low-altitude economy. The Northeast Cold Vortex, as a formidable atmospheric circulation system in mid-to-high latitudes, exerts a profound impact on weather patterns. However, its intricate internal structure has long posed a formidable challenge in meteorological forecasting. This UAV observation initiative introduces a groundbreaking technical approach to address this long-standing issue.