In the center of the 1,600℃ blaze, a furnace of molten steel churns like a sea. It's not just simple boiling, but a solemn transformation of ore into the backbone of a great power. The converter—the "heart" in the chest of this steel giant—uses oxygen as its pen and time as its ink, writing an epic of strength in 30 minutes: hammered and tempered again and again, just to make bridges span farther, high-speed rail run faster, and skyscrapers rise higher. Every tilt is a perfect handshake between technology and craftsmanship; every roar is the heartbeat of a great power's manufacturing. Choosing the converter means choosing to leave "hardness" to the world and reserve "gentleness" for the future.