An anonymous reader writes: Following the lead of online retail giant Amazon, Chinese e-commerce group Alibaba has today tested its first drone delivery service. Asia's largest e-retailer promises to deliver ginger tea within an hour to customers across its flagship consumer-to-consumer marketplace Taobao, which holds an estimated 90 per cent market share in the country. The remote-controlled black and silver drones are helicopter-like in design and carry a white box containing the product. For now the service is limited to a three-day test in three of China's largest mega-cities, Beijing, Shanghai, and Guangzhou, and confined to just one tea brand from one merchant. The trial will be applied up to a limit of 450 tea deliveries.