From the phone in your pocket to the giant screens illuminating city skylines, a significant share of the world’s displays can be traced back to one place: the Guangdong-Hong Kong-Macao Greater Bay Area, particularly Shenzhen. From display panels to LED modules, the entire supply chain is located within a few hours' drive, allowing companies to scale up quickly. CGTN's Wang Tianyu went inside the industry to find out how Shenzhen is leveraging this advantage to serve customers worldwide.