When Yu Yichou arrived in the yard, Xie Ling was running on the wooden stakes with a graceful figure, and her figure disappeared in a flash.

A few days ago, she practiced on a two-meter wooden pole, but now she can move freely on a five-meter wooden pole.

Gu Wei felt a great sense of accomplishment.

This was his first time as a master, and he felt very satisfied, just like watching the seedlings he had carefully watered grow into beautiful flowers.

Yu Yichou was frightened and panicked, fearing that Xie Ling would fall accidentally.

As he watched, he ran to stand under the wooden stake, opened his arms, and moved back and forth along the path of Xie Ling's running, thinking that if Xie Ling accidentally fell, he would be able to catch her.

Gu Wei raised an eyebrow and said, "It's okay, don't worry!"

Yu Yichou frowned, "Even if you're not worried, I am! Hey, Xie Ling, run slower, run slower!"

While jumping on the wooden stakes, Xie Ling asked, "Yu Yichou, you actually came out. Can we open the treasure box now?"

Her words scared Yu Yichou half to death again.

Yu Yichou opened his hands and ran back and forth under the wooden stake, shouting, "Don't talk yet! Be careful not to fall down!"

Xie Ling looked at Yu Yichou's worried expression, and finally jumped down, jumped to Gu Wei's side, and spread out her hands, "See, I said it's okay."

When Yu Yichou saw Xie Ling jumping down from above, he finally felt relieved. He wiped the nonexistent cold sweat from his forehead and looked at Gu Wei with a hint of accusation in his voice, "Even if Xie Ling is very powerful, you can't just sit there and watch the show with your hands folded. What if something happens? You have to come and take care of it no matter what."

Xie Ling is young and a girl, so Yu Yichou already treats her as his own sister.

Gu Wei immediately put his arm around his shoulders and said with a smile, "Okay, it's my fault. By the way, why did you have the heart to leave prison?"

Yu Yichou said seriously, "The treasure box you asked me to open does have some clues. We only need one step to open it. Come on, let's go and take a look."

The two followed Yu Yichou to his room.

Yu Yichou's room was very simple. There was only a wooden bed with a white curtain, a round table, and a stool. Apart from that, there was no other furniture. It looked empty at first glance.

The round table was piled with all kinds of tools, of different lengths and sizes, all sorted into categories. At a glance there were probably two or three hundred of them.

Gu Wei and Xie Ling were deeply shocked by what they saw.

This mechanism is really complicated...

Yu Yichou went over and sat down, touching his nose, "There are no other stools, you two will just stand."

The two men stood by the table and watched Yu Yichou with his head lowered, holding five or six screwdrivers of different lengths in his hands, tinkering with them attentively for a while.

“It’s open, it’s open!”

Following Yu Yichou's shout, the two of them quickly looked over.

The exquisite wooden box made a "click" sound, and Yu Yichou excitedly opened the lid. He saw a dark black iron block lying quietly inside, emitting a dark red glow, and it looked very heavy.

Xie Ling frowned. There was only a piece of iron in such a precious treasure box?

But when she observed the expressions of Gu Wei and Yu Yichou, she found that this piece of iron seemed to be quite rare and precious?

Gu Wei and Yu Yichou both widened their eyes, clenched their fists, and were so excited that they could hardly speak.

Especially Gu Wei, a person who never shows his emotions, the excitement in his eyes was almost overflowing.

Yu Yichou took a deep breath, his voice trembling slightly, "No wonder this thing became the treasure of the Nangong family of Dongling Kingdom! This thing has been lost for so many years, I didn't expect it to be in the hands of the Nangong family!"

Gu Wei's eyes were eager as he explained to Xie Ling, "This is not an ordinary piece of iron, but black iron. It was made from the sword of Lou Chuxue, the most famous swordsman in the world, thousands of years ago. It can cut iron like mud and cut hair with a blow. It is a treasure that all martial artists in the world are eager to get."

Xie Ling nodded in understanding.

But she doesn't have much idea about cold weapons, she prefers modern hot weapons.

She still preferred her light sniper machine gun.

Gu Wei saw what Xie Ling was thinking.

He shook his head slightly. "This piece of black iron is really different from an ordinary sword. It is extremely difficult to get even one ounce of it. With just half a ounce of it, an ordinary sword can be turned into a sharp weapon. It is fierce and indestructible."

Yu Yichou continued, "Yes, but this black iron has a fatal flaw..."

Gu Wei frowned, "What?"

Yu Yichou pointed at the black iron and said, "Look carefully at the red dark pattern on it. Is it disappearing little by little? This red dark pattern is the exquisiteness of the black iron.

When the Nangong family was melting the sword, they used some unknown method to make this piece of black iron lose its activity little by little when it came into contact with the outside world, unless it was used to forge a sword immediately.

However, the person who picked up the treasure chest didn't know that the thing inside was black iron, so where could he find a swordsmith? Swordsmiths were rare in the world. So even if ordinary people stole or picked up the treasure of the Nangong family, they could only watch it lose its activity little by little and turn into an ordinary piece of iron. "

It was exactly as Yu Yichou said.

The red dark patterns on the black iron were disappearing bit by bit at a very fast speed. Even as they were talking, one tenth of the iron block had turned black and lost its inner red luster.

I'm afraid that in just a few days, this black iron will turn into an ordinary piece of iron.

"Can you forge a sword?"

Gu Wei asked immediately.

Yu Yichou spread his hands and said, "I can only make mechanisms, not swords. If I guess correctly, ordinary swordsmiths will definitely not be able to refine this black iron."

"Can't an ordinary swordsmith refine it?" Gu Wei frowned and turned to look at Xie Ling, "A Ling, do you still remember the person Su Qu mentioned before he left?"

My dear, there is more to this chapter. Please click on the next page to continue reading. It’s even more exciting later!