A medical staff transfers clinical samples to a drone on top of the roof of a hospital in Tongling, East China's Anhui Province on January 7, 2025. The drone will carry the samples to a medical innovation center 6 kilometers away. The market size of China's low-altitude economy is projected to reach 1.5 trillion yuan ($205 billion) by 2025, according to data from the Civil Aviation Administration of China. Photo: VCG