```
Looking at these tools, Yang Mengchen's eyes brimmed with irrepressible ecstasy and confusion.
In her previous life, she had heard her friend Lan Ling mention that a certain female military doctor possessed a set of unparalleled medical instruments, said to be forged from deep-sea volcanic black rock through a special refining process. They were both tough and flexible, could penetrate iron when heated, and turn water to ice when cooled. Later, the female military doctor mysteriously disappeared, and the medical instruments vanished as well.
The tools before her were exactly as Lan Ling had described. Could it be that they were the very same medical instruments owned by that military doctor? Could it be that the military doctor had also been reincarnated into this time? Where was she now, and how did these medical instruments end up in this small cave?
The second layer was arranged with various types of tweezers and other surgical instruments, all made of stainless steel.