I had previously heard of a tool called the Soul-Extinguishing Nail, said to be a magical artifact capable of sealing away a soul. The primary material for such a nail is an ore known as "Ghost Iron," which must be extracted from mines deep beneath the Nine Netherworlds. It also requires supplementation with Dragon Vein stone from the Qinling Mountains, Azure Dragon wood from Mount Hua, and other materials—the requirements are incredibly exacting.
Yet, this Seven-Inch Soul-Loss Nail in front of me looked for all the world like an old-fashioned, square-headed iron nail, or perhaps a coffin nail.
I asked, "Shisi, this nail of yours looks like nothing more than an ordinary spike. Is it really as miraculous as you claim?"
Chapter 47