Xie Jun didn't know that besides him, there was another pair of eyes on the roof staring at the alchemy in his hand.

After putting away the iron smelting, Xie Jun called his cronies in.

"Your Highness."

"Take your stuff and keep heading north."

"Yes."

The cronies took the box and went out of the house.

The figure hidden in the eaves quickly ran towards the figure that was leaving.

When the man left the station, the figure quickly stepped forward to kill him, and then even the body with the box was thrown into the space, and then the slender figure quickly disappeared into the thick night.

Xie Jun has been waiting for his cronies to send him a signal that as long as he arrives at the designated place, his side can set off.

But this waited until the next morning, and there was still no news from there.

Xie Jun's heart gradually sank, could someone see through his plan and get in the way?

Worried that things would change, Xie Jun immediately sent a message to his people.

But the reply I got was that the person who took the iron smelting technique didn't show up all night last night.

Xie Jun was stupid.

That's impossible! When pigs fly!

It was his most trusted cronie, and he didn't believe he would betray him.

Xie Jun immediately sent someone to look for him, but the person disappeared as if the world had evaporated, and there was not even a single hair left.

Xie Jun was completely stunned at this time, he originally planned to make a play, who knows, now he is really going to find iron smelting.

How could Su Tong, who had obtained the iron smelting technique, care about their life or death.

After getting her hands on the alchemy, she was not in a hurry to leave the Jin Kingdom.

It was spring ploughing time, and they needed a lot of seeds, so on the way out, she passed through various cities, and she bought a lot of grain seeds, vegetable seeds, roots, trees, and birds, but she bought everything she thought might be used.

By the time she left the Jin Kingdom and returned to the Northern Wasteland, it had been nearly ten days later.

As for how Jin Guo is now, that's not her concern.

After returning to Tiankui City, Su Tong called Chu Yun to the inner hall.

"Come, you have culture, you look at this thing."

During the time that Su Tong was away, no one knew what she was doing, so when Chu Yun unfolded the iron refining technique and observed them one by one, Rao was as calm as he was also stunned.

"Alchemy? The alchemy of the Jin Kingdom? ”

Su Tong nodded calmly, "Yes, it's right." ”

"The city lord went to the Jin Kingdom to steal it?"

"Yes and no, it was their people who stole it themselves, and I took it with my hand."

Chu Yun: "......"

Although Chu Yun was speechless, he was still excited.

This is the alchemy of the Jin Kingdom!

"The city lord never said it before, why did you let Xie Rui go, city lord, could it be that he was already playing this big game of chess?"

As smart as Chu Yun, he quickly thought of the joints, before he didn't understand why Su Tong let Xie Rui go so easily, but now that he thinks about it, it must have something to do with this iron smelting technique.

Su Tong shook her head and nodded, strictly speaking, this game of chess was taught to her by Xiao Yan.

Xiao Yan wrote every day, openly and secretly accusing her of being perfunctory to him, and she was really annoyed by him, so she told him about Xie Rui's situation.

At first, Xiao Yan didn't respond to this matter, but once he asked her if she really wanted to make iron, and she said yes.

Xiao Shen said to let her do what he said.

It is difficult to get the iron smelting technique from the Prime Minister's Mansion with Xie Rui in his hands all the time, because the other party will also feel that Xie Rui will not die before the goal is achieved, and they will only keep trying to save people and delay time.

Xiao Shen asked him to do the trick, and then let the Red Devil in the Jin Kingdom cooperate with her for the rest of the time.

At this time, Su Tong learned about the spy from Meng Jiang again, and someone sent a pillow just after dozing off.

Before she let Xie Rui go, she let the Red Devil tell Xie Jun about it, and let Xie Jun know about the stupid things Xie Rui did in the Northern Wasteland, as far as the two were hostile, Xie Jun would definitely not easily let go of the opportunity to make Xie Rui unlucky.

Sure enough, Xie Jun did not disappoint her.

Later, she wanted to get it, and Xie Jun definitely wanted to get it, she just let the Red Devil use some things to induce Xie Jun, if he didn't have that kind of mind, he wouldn't be easily fooled.

At the beginning, Su Tong didn't have to be interested in iron smelting, but when they opened the mine, they found that there might be much more iron ore under this mine than they imagined, so it was very important to have superb iron smelting.

Iron smelting is extremely important to the Jin Kingdom, and it is also divided into three parts, it is indeed difficult to get it by holding Xie Rui hostage, otherwise she would not go around in such a big circle.

Although the process was a bit troublesome, at least the result was satisfactory.

As for whether there will be chaos within the Jin Kingdom, it has nothing to do with her, after all, even without her, the good sons of the Jin Kingdom will not let him live for a few more years.

"But the city lord, this iron smelting technique is so important, I don't know how the city lord will use it?"

To be protected by the Jin Kingdom into something like that, of course, it can't be easily handed over to others, even if those people are trustworthy now, so what about the future?

"What do you think?"

Chu Yun frowned slightly, this matter really needs to be thought through.

"I can only learn the model of the Jin Kingdom and let them divide their labor."

"For each of these steps, we train a group of people."

As for those who can master this technology, they need to be contained.

Now there are not many people who can smelt iron in the Northern Wasteland, some of them were brought by her from the Chu State, the situation in the Chu State is more complicated, even if Xiao Ember wants to get the iron smelting technique, she doesn't want to transmit the iron smelting technique back to the Chu State now.

"You're going to bring all the people who will be involved in the ironmaking here tomorrow."

"Okay."

……

Xie Jun would never have dreamed that the iron smelting technique he had obtained in every possible way would actually be to make wedding dresses for others.

I didn't expect that I was just doing a show, but in the end, I really came out to find iron smelting.

"Your Highness, all the subordinates who can go to him have searched all over the place, but they can't find any trace of him, won't this kid be a traitor?"

Xie Jun's expression was almost distorted.

"Dig three feet into the ground and find people out of the main hall!"

He was glad that he didn't tell Emperor Zhaoheng the news that he had found the iron smelting, otherwise he would really dig a pit and jump by himself.

……

The Iron Smelting Technique wrote down every step and precautions of iron smelting very clearly, and Su Tong and Chu Yun spent a whole night separating them.

Su Tong's plan is that a small group will be responsible for each link, just like an assembly line in a large factory.

When they were in order, those who were good at making iron were taken to the inner sanctum.

"See the Castle Lord."