The difference between spirit and thousand refining was as great as night and day, much like the power of a one-word battle armor versus a two-word's.
Once spirit refined, the metal sublimated to another level. It was for this reason that fifth-rank blacksmiths were rarer and no weaker mecha craftsmen or designers of the same rank.
To break through the fifth rank, Tang Wulin only needed to successfully spirit refine once. This was considered a major milestone for any blacksmith.
Three years ago, Mang Tian had attempted this, and though he succeeded, it came with a price. Unknown to Tang Wulin, the man had sustained several injuries as a result and could not endure more advanced forging requests from then on.
Mu Chen would never have permitted Tang Wulin to spirit refine if he were present. For this process, the demands placed on the blacksmith's mind were immense. It could be dangerous for a soul master at Tang Wulin's level..
Fortunately, Tang Wulin was no ordinary blacksmith.
