On the third day of the letter sent quickly, the Qin Cha came to the Qi Mansion with the will of Kyoto, and officially canonized Hu Sisi as a salt envoy with seven official positions.

This incident quickly spread in Min County.

For a while, the voices of discussion were everywhere.

Can a woman be an official?

This is unheard of and unseen in Min County.

is still a seven-rank official.

This is also the biggest official in the history of Min County.

The difference is that in the past, the official was the county commander and the commander of the Soldiers and Horses.

And now, this official is a salt maker.

In other words, Min County is about to start salt production.

Originally, I still thought that Hu Sisi's ability to become an official was due to the relationship between Qi Xiangru.

But after inquiring, I found out that Hu Sisi had a set of salt-making methods, and this salt-making method was valued by the imperial court, so she was canonized as a female official.

Min County is actually going to make salt.

To make salt, there is a problem that needs to be taken into account.

Salt production is inseparable from the origin of salt.

In Daqin, salt comes from two places, sea salt and lake salt.

However, Min County is not near the sea, and there is no lake, so where will this salt come from?

But this is just other people's opinions, and for Pei Yun, in addition to sea salt and lake salt, there is another kind of salt, that is, mineral salt.

It's no wonder that other people don't know about the existence of mineral salt.

The mineral salt is buried 280 to 500 meters deep underground, and it is impossible to obtain the mineral salt with the technological level of Daqin.

But this didn't stump Pei Yun.

It's not just in the ground, just dig it out.

You must know what Pei Yun used to do in Nanshan Village.

Coal mining, stone excavation...... As for how to dig underground, Pei Yun has a method.

Of course, digging for salt is not the same as digging for coal and digging for stone.

Coal mining and stone digging can not be done so deeply.

If you want to mine salt, you must first determine if there is any salt in the ground.

Pei Yunneng was able to determine that there was mineral salt in the ground of Min County, and he found salt ore by the river.

Although the amount of salt ore by the river is not large, from this, Pei Yun came to the inference that there is mineral salt in the underground of Min County.

The existence of the mineral salt is determined, and the next step is to dig out the mineral salt.

The mineral salt, which was buried 280 to 500 meters deep underground, wanted to dig it out, which seemed impossible to others, but Pei Yun had a way to make the impossible possible.

Please don't underestimate the wisdom of the ancients, according to historical records.

About 2250 years ago, the first salt well was dug in Sichuan, China.

In 1050 AD, the mining of salt wells made a qualitative leap, from digging wells to drilling wells.

The full name is: percussion file drilling and chiseling technology.

The drill bit is made of iron, the drill pipe is bamboo, and the person stands on the wooden frame, steps on the seesaw, lifts the drill pipe, and then freefalls, allowing the drill bit to hit and crush the rock.

In 1700 AD, the depth of salt wells in Sichuan generally reached 300 to 400 meters.

In 1835, the depth of the well exceeded 1,000 meters, the deepest depth that could be achieved by human drilling in the world at that time.

After digging the well, it is time to collect the mineral salt.

The process is not difficult.

The pipe is injected into the well to dissolve the mineral salt into brine, and then the brine is pumped out.

The brine is then analyzed, evaporated, and dried......

To put it simply, the whole process is to dissolve and then crystallize.

Originally, salt production had to rely either on the sea or on the lake, and according to Pei Yun's method, salt could also be made on land.

Environments such as seas and lakes are only in specific places, which creates a problem, inconvenient transportation.

And as far as Daqin's transportation level is concerned, it can really torture the dead.

That is to say, due to the limited salt production area, the output of salt cannot be high.

Nowadays, not only the sea and the lake, but also the underground also has salt.

All of a sudden, salt production areas are blooming everywhere, and they are no longer unique to the sea and lakes.

And when it comes to the convenience of transportation.

Min is landlocked, at least on the road to Kyoto, which is much more convenient than from the sea, from the lake.

How to make salt, and where to excavate, Pei Yun told Qi Xiangru, and Qi Xiangru was responsible for arranging people to do it.

In addition to bringing the decree, the Chin Cha also brought a group of men, including workers under the officials, and post officials who liaised with Kyoto.

The post envoy is not an official in the strict sense, but only poor.

However, if people can contact Kyoto, their identity is naturally not simple.

In addition to this, there is one more thing to do.

That is to go to the site to see the salt production.

Seeing is believing.

When he saw the mineral salt brine that came out of the ground and the refined salt made after one process after another, Qin Cha was overjoyed and said three good things in a row.

Then there was a secret meeting between Qin Cha and Qi Xiangru, accompanied by Hu Sisi, and even Pei Yun was present.

Qin Cha knew Hu Sisi, but Pei Yun saw him for the first time.

The appearance of a new face in a secret meeting always makes people wonder what kind of identity he is.

But Qi Xiangru didn't want to introduce more, he just said that he was his own person, just leave him alone.

This is said to make people feel that it should not be,

Since Qi Xiangru said that he is his own person, he is naturally his own person.

But he also said to leave him alone, as if he was superfluous, but if he was really a superfluous person, he should not appear in the secret meeting.

Qi Xiangru didn't plan to explain more, so Qin Cha didn't ask more.

Qincha's name is Yu Changsheng.

It seems that the relationship with Qi Xiangru is very good.

As soon as they met, they saluted and said: "I have seen Gong Qi, and Gong Qi's demeanor is even more than in the past, which is gratifying." ”

"You kid still has the same sweet mouth, just say a few more words if you can speak." Qi Xiangru said this with ridicule.

Just these two sentences are enough to let people know that this relationship is not ordinarily good, just like their own family is talking.

Indeed, there is nothing wrong with saying that it is your own family.

Although Qi Xiangru's three sons were military generals and were stationed at the border and did not return until their deaths, this did not prevent them from having confidants in Kyoto.

Yu Changsheng is one of their confidants.

Therefore, in the absence of outsiders, the relationship between Yu Changsheng and Qi Xiangru is the same as that of his own family.

And there are not many people like Yu Changsheng.

It's like what Qi Xiangru said to Hu Sisi.

"You must know that you have three brothers, and although they are dead, some of them are not dead or gone."

Qi Xiangru died of three sons, and the court's practice was to give him a viscount and give him a fief.

And this is only a practice at the level of the imperial court.

At the court level, there are still many people who are willing to do something for Qi Xiangru.

In other words, the three sons died, but they left Qi Xiangru with a lot of connections.

If Qi Xiangru doesn't use it, these connections will naturally be useless.

But if something happens to Qi Xiangru, the role of these connections will be revealed.

It's like now.

The Qin Cha and Qi Xiangru sent by the imperial court turned out to be their own family.