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... hat part was used for.
"Heavens! I know this material, my blacksmith's shop has it too! I never thought cannons in the future would be made from this stuff?"
"Didn't you hear what the instructor said? Although the cannons we make in this era can't match those of the future, they can still easily kill people!"
"If used on the battlefield, even iron shields would be blown to pieces by them!"
"As expected of a prosperous age, such weapons are truly astonishing!"
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