What Are the Chinese Building Underground in Hainan? A satellite captures an image that uncovers the entrance to an underground complex. What is being built there? Facebook Prev Article Next Article Engineering Checkout these cool gadgets... Related Posts NanoWeb A Revolutionary Transparent Conductive Film Turning Shipping Containers into Water Purifying Centers The Largest Spiral Escalator Ever Built Just Opened In Shanghai Concrete Tent That Inflates A Clever Accessory Ensures You’ll Always Know When You’re Drilling Straight Why Planes Crash?
