civilext on Instagram: "🚧 How Chinese Workers Drill Tunnels Through Solid Rock! China’s engineers are taking tunnel construction to the next level with the Shui Mo Drill Bit method — a groundbreaking technology designed to slice through solid rock with extreme precision and speed. 🔹 This advanced tunnel boring technique uses a high-pressure rotating Shui Mo (water ink) drill bit, which combines mechanical drilling and hydraulic jet cutting. 🔹 The water jet reduces friction and heat, allowing