This flying sword magic artifact's sword blank was the longest artifact refining endeavor Li Shiming had ever undertaken, spending a whole six months on it, not including the design phase.
To inscribe sharp runes on a sword blank imperceptible to Divine Sense, he conducted multiple experiments using other materials, relying solely on the tactile sensation in his workshop space, thereby enhancing inscription precision to 5 nanometers.
This is equivalent to blind engraving; Divine Sense is like the cultivator's eyes, and without its aid, it's akin to having no help from eyes.
With the help of his personal magic artifact IBMz15, he mastered the technique after practicing for a period.
Following that was the inscription on the sword blank, due to relying only on tactile sensation for inscription, the process was not fast.
