How China built 5000 KM underground Great Wall to survive Nuclear war

Deep beneath the mountains of China lies one of the largest secret construction projects on Earth: a vast network of tunnels built to hide nuclear missiles and survive a nuclear war. Chinese state media call it the "Underground Great Wall," and reports claim it stretches for 5,000 km. In this episode, we go inside: why China went underground after its 1964 no-first-use promise, how soldiers blasted tunnels through solid granite, what would happen inside these mountains during a nuclear attack, and how much of the famous 5,000 km figure is actually true. ⏱️ CHAPTERS 0:00 The missile no satellite can see 1:04 Why China went underground 2:40 How the tunnels were built 5:04 Inside the tunnels during a nuclear war 7:12 Myth vs reality: is it really 5,000 km? 8:32 Two Great Walls 📚 SOURCES Jamestown Foundation – China's "Underground Great Wall" and Nuclear Deterrence Bulletin of the Atomic Scientists – Chinese Nuclear Weapons, 2026 SIPRI Yearbook 2026 Arms Control Association – China Arms Control Profile Georgetown University Asian Arms Control Project (Phillip Karber, 2011) China has never officially confirmed the full size of the tunnel network. Figures in this video are based on published reports and independent estimates. 🎬 Visuals in this video are AI-generated recreations for illustration. They do not show real classified sites. 🔔 Subscribe to The Making Of for more of the world's biggest builds, megaprojects, and hidden engineering. #UndergroundGreatWall #China #Megaprojects #NuclearBunker #Engineering #TheMakingOf #Documentary