While Xiao Tao went to fetch things, Rui Xue chatted with Lao Qian again.

"Uncle Qian, the last time you went to the north, the time was so tight, how did you have time to explore those mineral deposits in the north. It's so good to hide it, I don't know even if I die. ”

Lao Qian was a little embarrassed: "It's not all me who did it, it's a coincidence." ”

The roads in the north are rough, and it is not uncommon for grain trucks to be damaged on the road.

In general, most of the dealers' teams will follow a master who is attached to the car to inspect and repair the vehicles damaged on the road.

Lao Qian's team, after entering the northern border, was followed by people sent by Zhao Fengnian's military camp along the road.

There are blacksmiths in the army, and they are very speculative in chatting with Lao Qian.

On the way, the two exchanged ideas with each other about Dalan's current iron-smelting technology.

Originally, Lao Qian didn't think this matter was particularly important, just to do his friend a favor.

After I came back, the more I researched, the more I felt that if I continued to do this, I could help many people.

Later, I heard that Zhao Fengnian attached great importance to this matter and wanted to exchange the secret technique of iron smelting from the clear water.

I know that this is not a trivial matter, he is a technical nerd, and all his thoughts and purposes are to improve his skills.

For those early investments, there is no concept of future development.

Secretly got a few metal rivets from the blue water, smelted them, and tossed them for a while.

I really relied on my own skills to make a few similar ones.

Although ordinary people can't see any difference, Lao Qian knows in his heart that there is still a big gap between what he wants.

There are many obstacles to doing research in Kyoto.

He can't ignore the interests of Ruixue and Zhuangshang, and if he violates the law, he is not the only one who is unlucky.

In terms of funding, it is also a large investment.

What kind of situation they are in now, Lao Qian sees it, and he doesn't want to burden Ruixue again.

If you can go to the north, these problems can be ignored.

This can be regarded as a help to Zhao Fengnian, and he also wants to repay Ruixue's personal favor or something through this matter.

Everything has been considered, and things have been cleared, so I told Ruixue.

Apart from thanks, Ruixue couldn't say anything else.

Isn't it just two hundred taels, and you can still get it out if you put it together.

When Xiao Tao came back with the box, she saw an old man and a young man encouraging each other.

A little helplessly stomped his feet: "Miss, you have been coaxed by this little old man again." Since he is going to the north, he will also be helping the prince to do things at that time, where will he use two hundred taels. Don't you invite Mr. to the children in the village in the spring? ”

Ruixue let out an "ah" and sniffed.

"Yes, Uncle Qian, did you ask for too much this time?"

Lao Qian coughed dryly: "What are you talking about, I went to that place, and I don't have to prepare more money for emergencies." The distillation and fermentation utensils that I helped Miss change a while ago are not all my own money. ”

Xiao Tao was a little unhappy, and put the box in her hand on the table.

Lao Qian's eyes instantly dilated, and he stretched out his arm to protect the box.

"Oh, grandma, you are lighter, there are precision instruments in here."

Xiao Tao suddenly became dumb and held back her temper.

Even if this matter was revealed, Lao Qian carefully opened the box to reveal the mezzanine at the bottom of the box.

The three cipher cylinders, lying at the bottom of the box, were not damaged.

Only then did the three of them dare to pant loudly, and Xiao Tao glared at Lao Qian with some unconvinced.

muttered in a low voice: "You just want to pit Miss Silver, and you are more greedy for money than Uncle Qian." ”

Lao Qian rubbed his hands, took out a password cylinder from the box, and gave Xiao Tao a white look.

"My money, but it's all done right, that's like him, Scrooge."

After the words fell, he didn't say anything, and carefully fiddled with the precision lock on the cipher tube.

With a few subtle "clicks, clicks" sounds, the lock barrel was opened intact.

I don't know where Lao Qian found a thin silver hook, and hooked a roll of parchment the thickness of a little finger from the lock barrel.

After carefully looking at the shape, he put it on the tip of his nose and sniffed it again, making sure that there was no problem, and then handed it to Rui Xue.

Ruixue was a little nervous, she kept it so carefully, she didn't know what kind of shocking secret was recorded on it.

His breathing was much lighter, and his fingers trembled slightly as he unfolded the parchment roll.

The room was poorly lit, and only a small piece of parchment could be seen densely printed with many character patterns.

Xiao Tao stretched her neck and sighed: "This is too small, what is written." ”

Lao Qian rubbed his hands and took out a polished crystal mirror from the leather bag around his waist.

"Let me see."

The corners of Ruixue's mouth twitched, isn't this a magnifying glass, this old man, the tools are quite complete.

The three of them moved to the window, and with the magnifying glass in Lao Qian's hand, they could see the contents of the parchment clearly.

Lao Qian sighed "sigh~": "What kind of thing is my Dao, but it is the technique and process of refining sea salt." Why did Madame keep this thing so closely? ”

Rui Xue couldn't help but be a little disappointed, although the salt thing was profitable, but it was not a business that he could do now.

Several salt farms in Dalan are all by the sea, heavily guarded, and the saint will not allow others to get involved.

But why does Li Ningshuang regard this thing so important, could it be that when they came to Dalan to do business, they wanted to open a salt farm.

"Uncle Qian, when my aunt and they first came to Dalan, there was a large-scale salt farm here."

Lao Qian thought for a moment and shook his head slightly.

"No, most of the salt farms in Dalan today were opened after the succession of the current saints, and I remember that when I first came to Dalan, most of the salt was transported from our clear water. The price is also much higher than it is now. ”

Ruixue seems to have touched a hint of the key.

Dalan's current method of making salt is mostly brought by Li Ningshuang from the clear water.

If it weren't for this, the Li Ningshuang brothers and sisters would not have gotten so much preferential treatment when they were doing business in Dalan.

This thing is indispensable in the lives of the people, and if it weren't for Dalan's technology, even salt would have to rely on imports from clear water.

At that time, the saint was afraid that he would not dare to tear his face with Bishui because of firearms.

The Li brothers and sisters offered the method of making salt to the saint, in exchange for the land of eighteen miles of paving, and the preferential treatment of doing business in Dalan.

But in the end, Li Ningshuang still ended up being unladylike and dying in a foreign country.

Rui Xue rolled up the parchment paper and handed it to Lao Qian.

"Uncle Qian, put it back in its place, it was left to me by A-Niang, since we can't use it, let's keep it."

Lao Qian nodded, took the parchment, and re-fastened the cipher tube.

"Are the remaining two still open?"

"Let's open it, I have to see what A-Niang left for me."

Rui Xue also lost Fang Cai's excitement, and sat on the side, waiting for Lao Qian to open the remaining two cipher cylinders.