News Decoding on Instagram: "China has completed the Shenzhen–Zhongshan Link, a 28 km cross-sea mega corridor connecting Shenzhen and Zhongshan across the Pearl River Estuary. The project features long-span bridges, artificial islands, and a 6.8 km immersed tube tunnel under open sea waters. One of the world’s widest eight-lane underwater tunnels, it reduces travel time from nearly two hours to just 20–30 minutes, strengthening commuting, freight movement, and regional integration in the Greater