When Fan Yu took the Flying Soul Tool shell Lu Yi handed him, his first thought was how light it was.
Far too light!
When the Soul Tool had sat on the laboratory table, he had assumed a Flying Soul Tool of that size would weigh at least several dozen jin.
If he had not felt the fine metallic texture beneath his fingers, he would have sworn he was holding a cardboard model.
Yet when he tapped the shell, it made none of the crisp sound he expected. Instead, it gave a thick, muffled thud, as though he were striking a metal wall. Its light weight left him with a jarring sense that something was wrong.
To keep the shape identical to Lu Yi's prototype shell, Fan Yu had dismantled it and handed the parts to the Soul Tool Department's Core Disciples to replicate.
The moment the students responsible for forging received them, they realized these parts were anything but ordinary.
The parts were about as thick and light as thin cardboard, yet far stronger than Hundred Refinement metal.
Since when had there been a Rare Metal this light and strong?
Or was it some special alloy?
They could not help wondering.
They had never seen the peculiar wave-like patterns on the metal surfaces, either, and soon everyone had a different theory.
Yet the material they had been given was the exceedingly common Tungsten Steel.
Tungsten Steel was extremely strong and dense, and its moderate price made it ideal for armor. It was also one of the hardest metals to forge.
Fan Yu's requirement was that they replicate the parts they had received in Tungsten Steel refined at least a hundred times, matching their shapes exactly.
The finished parts would then be used to make Flying Soul Tool shells.
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