Black Profound Iron

Seeing this, the clerk stopped being overly enthusiastic. He stepped aside to clear the way and made a welcoming gesture. "Please, make yourselves at home. If you need anything, just call for me."

Tang San nodded slightly and walked into Hundredfold Forge with Cinderella.

The interior was even more spacious than it appeared from outside, and a distinctive scent of metal, charcoal, and grease hung in the air.

Rows of tall shelves stood against the walls, neatly stocked with metal ingots of various grades and unpolished raw ores.

From the most common pig iron and refined iron to costly Sinking Silver and Profound Iron, as well as special metals that glimmered with strange luster and whose names Tang San did not recognize, this place had everything.

On the display counters on the other side were completed weapons and armor. Blades and swords gleamed with sharp edges, while the armor was thick and sturdy, its cold sheen shifting beneath the lights. They were clearly the work of highly skilled craftsmen.

Tang San's gaze passed directly over those finished products as he headed straight toward the area piled with metal materials.

He extended a finger and lightly tapped the metals that caught his eye, listening to the sounds they produced.

Then he picked up small pieces to weigh them in his hand, feeling their density and texture.

Cinderella quietly followed beside Tang San without interrupting him. After all, choosing metals was Tang San's specialty.

"This piece of Sinking Silver has thirty percent too many impurities. Its toughness is insufficient; it will break easily."

"The Profound Iron is decent. Its density is high enough, but there are tiny air pockets inside that weaken its strength."

"Hm? This Cloud-Pattern Steel was heated slightly too much during quenching, causing the internal grains to become coarse.