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... p> Each piece of iron had a dull sheen, occasionally giving off a hint of black light.
This was known as restrained luster.
The better the quality of the object, the more inconspicuous it appeared.
Ordinary knives, after a little polishing, would shine brightly, but after a short period, they would become dull and lusterless. Iron-made knives could maintain a persistent and stable shine.
As for Hundred-Tempering Fine Steel, it had a restrained luster; at first gla ...
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