Disguised as a man, she returned to the military academy and was forced to study again.

At this time, Yan Qi was standing in the blacksmith shop feeling neglected, watching Uncle Xiao hammering away at the ironwork, as if he didn't notice Yan Qi's arrival.

But Yan Qi did not go forward to disturb him, and stood there like a wooden stake, as if she was determined to stand there until she died if Uncle Xiao ignored her. Finally, when Yan Qi wanted to change her posture, Uncle Xiao passed by her and gave her a look of pretended surprise.

Yan Qi: There are only two people in this shop, so let’s not act out, okay?

Seeing Yan Qi's speechless eyes, Uncle Xiao took out a box from the side and placed it in front of her as if nothing had happened: "It's finally here, take a look."

Yan Qi took the box with a smile on her face, and in her heart she couldn't help but complain, "What do you mean by a veteran actor? He really is a veteran actor!" But when she opened it and saw the black blade inside, which was shining with blue light, she was filled with amazement.

The changes to this knife after the second quenching are so huge!

He weighed it in his hand, looked up at Uncle Xiao, and asked sincerely, "Uncle Xiao, what is the material of this knife? It looks like black iron, but heavier than black iron. It looks like black steel, but lighter than black steel."

"Can you tell the difference between black iron and black steel?" Xiao Chongming didn't want to pay attention to him, but when he heard Yan Qi talking about the difference in materials, he casually picked up a few pieces of iron and placed them in front of him and sat down. "If you can really tell the difference, I'll tell you."

Dark iron and black steel are two very similar materials that are difficult to distinguish. Dark iron costs ten times as much as black steel, which is why black steel is often passed off as inferior.

Most inspections involve cutting the iron block open and distinguishing it. Only experienced masters can determine whether it is black iron by its weight and subtle gloss.

Yan Qi put the box down and heard the auxiliary computer beep. He clicked it and saw Ji Li. He asked her where she was. She replied casually: "I'm on the third floor of the rubble alley. [Cheerful]"

When Ji Li saw this reply, he felt that the other party was not affected at all, and his already gloomy face became even darker.

Three floors underground, and three more floors underground.

I couldn't wait to run out...

Seeking pleasure.

Then he took a deep breath and endured it, "I'll come to find you, don't wander around."

Yan Qi thought about it and felt that she should be able to get the things quickly.

"Okay, I'm almost done here, I'll meet you at the entrance [love]"

After seeing this message, Ji Li pressed the screen hard, then smiled slightly, entered the location with his slender fingers, and rushed there as fast as possible.

He thought of the boy smiling in front of him when they first met, like a pure flower bud.

The irritation in his heart could not be shaken off.

Suddenly I felt that this person was simply seeking death.

Yan Qi had no idea that danger was approaching, and just ignored it when no one came back. He weighed a few pieces of iron, made a quick assessment, and said to Uncle Xiao in front of him:

"From left to right, these iron blocks are black iron, black steel, black steel, and black iron. As for this fifth block..."

Yan Qi felt a little unsure, so he felt around a few more times and concluded, "It's a mixed copper mother." Laughing, he pushed the fifth piece of iron toward Uncle Xiao. "How cunning! They even mixed in a rare copper mother. I almost got fooled!"

Fortunately, I learned some real skills here.

Xiao Chongming looked at Yan Qi's actions, as if he wanted to pierce his soul. After a moment of silence, he picked up the dagger in the box and reluctantly introduced it:

"This dagger is neither iron nor steel, but forged from the horn and hyoid bone of an Iron-Swallowing Black Dragon. After being hammered tens of thousands of times at high temperatures, it turns black and remains so. Given its rarity and craftsmanship, charging you 150 million star coins is a steal. This material undergoes three special processes, becoming incredibly hard and razor-sharp. Cutting through black iron and black steel is a piece of cake, and even mixed copper is a breeze. Used properly, it can even penetrate the weakest points of a mecha."

As he spoke, he stacked the four iron blocks in front of him together and cut them with the dragon bone dagger like cutting tofu.

After finishing, he handed the dagger to Yan Qi, pushed the mixed copper mother back to her, and signaled her with his eyes to try it.