9am March 24, a blood-delivering drone landed slowly on the blood station of the Second Affiliated Hospital of Zhejiang University School of Medicine (SAHZU). With QR code scanned by the medical staff, the container carried by the drone presented itself to the delivery window. Inside were three packets of blood dispatched from the Zhejiang Provincial Blood Center. The drone flight took 5 minutes in total, half of the ground transportation time. This success marks a milestone for SAHZU and Z...