Qianwei County southeast Iron Mountain, a radius of thousands of miles, not only has high-quality anthracite mines, but also has huge reserves of high-quality pyrite.

In the past, there were many government-run and local private workshops in many mining areas of Tieshan, but the iron-smelting technology was not good, and the weapons created were very brittle, resulting in poor weapons and equipment.

An iron sword, within a hundred strokes, is full of potholes and will soon be scrapped.

In addition, the environment of the mining area is also very bad.

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Chapter 42 of "The Great Flame Extreme Tyrant" coincides! I am hitting it in my hand, please wait a moment,

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