A gust of autumn wind blew, blowing down a few leaves, and lingering past Fei Qian's side with curls, and for a while, the scene was extremely deserted......

Pang Tong glanced at it obliquely, and then shook his head with some hatred that iron is not steel.

"Uh...... Am I doing something wrong? Fei Qian was a little stunned.

Pang Tong said slowly: "It's not that I did it wrong, but I did it too right." ”

Fei Qian blinked, shook his head, and said, "No matter what, what needs to be said is still to be said, then, after that, I should leave......"

Fei Qian also thought about these things for a long time, but in the end he decided to make it clear.

This is the experience of Fiji's future generations, perhaps it is somewhat inconsistent with the habits of the Han Dynasty, the more friends are friends, the more it needs to be explained.

Just as a 50:50 two-person joint-stock company is the most likely to get into all kinds of disputes, the camaraderie between friends is a catalyst for promotion, and it can also easily become a poison that destroys everything.

Brothers, settle accounts. The clearer the accounting, the longer the brother does it, and once he is confused, the brother will not be able to do it for long.

In the Han Dynasty, forcibly taking people away, and then counting on the other side to have a Stockholm syndrome attack?

Taking advantage of Pang Tong, Guo Jia, Tian Feng, Zhuge Liang, etc., when they had not yet taken refuge in others, they kidnapped and took them away? Haha, the men of the Han Dynasty mostly read genuine Confucius works, and it is the most basic cognition to report directly and repay grievances with grievances, and it is not something that butchers can do to kill people with knives.

Unless it is under house arrest for life, once given a little chance......

Especially for wise strategists, it is not too easy to easily lead people into a ditch. Chen Gong instigated the rebellion of the entire Yanzhou in a few words, and Jia Xu took care of the powerful Dian Wei and Cao Ang in one sentence.

Cao Cao used Xu's mother to earn Xu Shu, Xu Shu may not know that even if he arrived in Cao Ying, his mother may not be able to live long, but in the end, he chose to be worthy of his heart and relatives, left Liu Bei, and went to Cao Ying.

The result is not that Xu Shu did not contribute to Cao Ying, but that Xu Shu and Cao Cao are both smart people, and they both understand the distrust between each other, so it is better not to say it.

Therefore, when Xu Shu took the initiative to go to a remote area when he was in Chibi, Cao Cao was overjoyed, and immediately boasted in front of everyone, and then sent Xu Shu away in the starry night......

It's not that Cao Cao really believes in the rumors, nor is he happy for Xu Shu's initiative, but he has an upright reason to throw this unsightly, time-to-time bomb that may explode at any time far away to the northwest frontier, and only need to send a partial general to see Xu Shu to death, how can he not be happy?

Because Fei Qian felt that Pang Tong, Zao Yi, Xu Shu, and Tai Shiming were more or less friends who really lived together in the Han Dynasty, communicated and exchanged ideas, and collided with each other.

Otherwise, even if it is rhetoric or forcible coercion, it may not be able to get the desired result in the end.

Fei Qian arched his hand, then turned and left.

Pang Tong put down the scroll in his hand and asked, "When are you going to return to Bingzhou?" ”

"In two days, I still have some things to do in the Huangjia Hidden Courtyard......"

Pang Tong sighed, and then lazily re-read the book.

"By the way," Fei Qian said in a distant voice, "...... I guess after a while, someone younger and smarter than you will come, remember to greet me......"

Pang Tong was stunned, and then he "cut" very confidently, and said loudly: "If someone really comes, the greeting will definitely be greeting, but it is even smarter than me...... Hey, hey, hey, hum, ......"

“…… Believe it or not...... It's up to you to ......" Fei Qian waved his hand and left.

×××××××××××××

In the study of the Huang Family Hidden Courtyard, Fei Qian and Huang Chengyan sat opposite each other.

On the table between the two people, there was a wooden box, which seemed to be divided into many compartments, and within each compartment was something inside.

The thing that Fei Qian said that needs to be dealt with in the Huang family is the craftsman.

Papermaking, cast iron, and instrument-making, basically, Fei Qian needs them, and they are all in urgent need.

Huang Chengyan's gaze lingered on the items in the wooden box, and his eyes flashed with an indescribable brilliance, just like a good wine person saw a jar of fine wine, and a lustful person saw a beautiful woman......

Huang Chengyan himself is also very familiar with the affairs of craftsmen, so when Fei Qian placed the wooden box brought by this long trek in front of him, he attracted Huang Chengyan.

Inside the wooden box, there are various minerals collected in Fiji.

The most obvious of these are two things, coal and iron ore.

As early as the Qin Dynasty, coal has begun to enter the field of vision of the Central Plains, but because the original coal mines rarely have a large number of impurities, especially sulfur, it is easy to produce a large amount of black smoke after combustion, which is disliked by the ancients, so it is still mainly charcoal.

Another reason why coal has not received enough attention is that the combustion is not easy to control, and it is not as obvious as adding a few sticks of firewood or charcoal to control the size of the flame.

But what Fei Qian now packs in a wooden box is a lump of coal that has undergone the first rough processing, that is, a small piece of honeycomb coal, mixed with some clay and lime.

This is the simplest and most convenient great invention of the use of coal.

The other is iron ore.

There is even a small amount of copper ore in the area of Luliang Mountain......

Mica.

Limestone.

These ores fill the entire wooden box.

For Huang Chengyan, this wooden box is even more attractive than being filled with gold and silver treasures.

Huang Chengyan took out the small honeycomb coal and took it in his hand to look at it carefully: "This thing is ...... Carboniferous? ”

The people of the Han Dynasty still liked coal, especially coal essence, also known as coal jade, and even some people specially used natural coal essence as seals, which were basically in the same position as glass.

But not many people pay attention to ordinary pulverized coal.

"How is this made?" Huang Chengyan asked.

Fei Qian said: "Coal crushing, washing, precipitation, take its fine powder, add yellow mud, clay, lime, charcoal powder to extrude ......"

Huang Chengyan shouted outward, asked the servant to take a brazier, and immediately put the small honeycomb coal in the brazier on the spot and ignited it, and then watched quietly, and something seemed to be jumping with the flame of the honeycomb coal in his eyes.

Huang Chengyan said solemnly: "This thing ...... How many people know the method of production? ”

This kind of thing, although simple, is often overlooked.

Coal is not only not easy to burn, but also mostly causes carbon monoxide and sulfur dioxide to be produced due to incomplete combustion.

Now, after adding some accelerants and desulfurizers, because of the porous structure of the honeycomb, the air circulation is ensured, and the combustion is naturally more sufficient, and the sulfur dioxide is also calcified in the process of combustion......

Fei Qian said: "The workshop in Pingyang Land, involving minerals and equipment, is all in charge of Huang Dou...... Now that there are so many things, he is also a little overwhelmed and has lost a lot of weight......"

Huang Chengyan was stunned for a moment and said with a smile: "Okay! ”

Yes? Is it okay to lose weight? What does this mean, does Huang Chengyan also have the potential to pick up skin?