Shenzhen, south China's high-tech powerhouse, is supercharging foreign trade through smart logistics. The cross-border e-commerce sector is booming as a pillar of trade, fueled by intelligent, seamlessly connected supply chains. With over 80,000 cross-border e-commerce sellers, nearly half of all those in China, Shenzhen stands at the very heart of the nation's global online trade. This industry is fast becoming a pillar of the city's foreign trade. What's the real engine of the boom? Innovation.