🚇📦 SF Express is going underground! In Shenzhen, SF Express's self-driving delivery vehicles now operate fully autonomously between the Futian transfer center and subway stations. The "drone + metro" system cuts transfer time by 50 percent and boosts local delivery efficiency by 20 percent. So far this year, over 2 million parcels have been moved this way. City logistics just got a major upgrade! ⚡🤖 #Shenzhen# #SFExpress# #Logistics# #DroneDelivery# #Innovation# #SmartCity# #Metro# #Automation# #FutureLogistics# #Guangdong# #Tech# #AI# #Efficiency#