Hearing this news, Chen Xian was startled, and thought that Yang Yuanwai had done something out of it.

Fortunately, in the afternoon of the same day, Yang Yuanwai sent a gift list for the proposal.

The long gift list made Chen Xian smack his tongue, and the value was afraid that it was worth three or four thousand.

In order to prepare a wide variety of gifts in this gift list, Yang Yuanwai specially sent a caravan to the county seat to purchase, and prepared for more than half a month before taking the remaining dozen generals of the Yang family, a caravan composed of more than 50 mules and horses, and more than 30 men, under the escort of Lei Genghu and the most elite 100 mercenaries of the Flying Tiger Mercenary Group, embarked on the mountain road east of Yiyuan.

Originally, Chen Xian's fiery mood was dragged by the concept of time in this era.

……

After resuming the trade routes, Chen Xian used the relationship between the Yang family and the Bai family to connect with Laiwu's people, and began to absorb the population from formal channels.

Chen Xian bought a large number of young people between the ages of 12 and 16 from Yazi, a native of Laiwu, at a good price.

In general, most people like beautiful women, but Chen Xian's purchase of people is not limited to men and women, as long as there is no disease or disability in the body and intelligence, he will not refuse.

Although it is not a disaster year now, because of the natural increase in population, the annexation of land, and the fact that the Jin State has been paying more and more taxes in order to cope with the threat from the grasslands, the life of the common people has become more and more difficult year by year, and there are many people who are willing to sell their children.

Selling children and girls, on the one hand, is because they really can't survive, and on the other hand, they also hope to find a way for their children to live.

There are more people who sell it, so naturally it is not worth much, and a good twelve or thirteen-year-old girl is only two or three dollars.

If it's ugly, no one wants it for free.

Chen Xian accepts people, whether they are beautiful or ugly, male or female, they are all two-fold.

The people of Laiwu County suddenly looked like crazy and went around collecting people.

Every time the caravan of the Yang family, the Bai family, and Chen Xian comes to the county seat, they will definitely bring a group of teenagers back when they go back, and they will have as many as they have in their hands.

It's a pity that there are not many people in Laiwu County, and the information and transportation in this era are inconvenient, although there are many people who are willing to sell their children, but the speed of Chen Xian's absorption is not ideal, except for the rapid absorption of hundreds of people from near the county seat at the beginning, and then the speed slows down, and there are only two or three hundred people in a month.

In addition to absorbing the population from the Laiwu County people's city, Chen Xian also stepped up his infiltration of Xizhuangzi and Huangjiazhuang, and sent people to secretly absorb teenagers between the ages of twelve and sixteen from the two Zhuangzi.

In the eyes of others, Chen Xian started from scratch and earned such a family business in a few years with a blacksmith shop, which is not an exaggeration to describe as a miracle, but in Chen Xian's eyes, his development speed is far from enough!

Now it has been almost three years since he came to this world, and there are only less than three years left before the Mongolian iron cavalry goes south, and Chen Xian has only occupied less than a township at this time......

What is a miracle in the eyes of others is so desperate in the eyes of Chen Xian.

Everyone, including Yang Miaonu, couldn't understand why Chen Xian was even busier and more eager even though he had won the victory.

Chen Xian couldn't explain anything to others, he could only silently spur the students and himself, faster, faster.

Fortunately, Chen Xian has already established supreme authority and trust in the minds of students, if he is an ordinary person, he is afraid that there will be problems if he pushes his subordinates like this.

While expanding the scale of the Xiangshuizhuang School, Chen Xian also stepped up efforts to absorb the labor force that had lost their jobs due to the efficient agricultural model of the agricultural cooperatives in Dongzhuangzi, and at the same time built two new Zhuangzi and two water conservancy projects near Dongzhuangzi.

These new Zhuangzi were all located next to rivers, and they took advantage of the adjustment gap in the water conservancy project to build a large number of hydraulic turbines and build new factories.

In fact, in Chen Xian's view, these are industrial complexes, with water energy as the core, integrating factories and workers' residences, and cultivating farmland near Zhuangzi to solve the problem of workers' food consumption and workers' family employment nearby.

Chen Xian also carried out a large-scale transformation of Dongzhuangzi at the same time.

Chen Xian built four turrets on the four corners of the soil enclosure of Dongzhuangzi, these four turrets are all made of cement and stone, three layers up and down, each floor is ready to install three small cannons of one to three catties, the direction of the cannons is parallel to the direction of the city wall, and its main function is to block a city wall from the horizontal.

Four turrets cordon off the four walls of Zhuangzi.

The design of this turret borrowed from the principle of the later fortress, so that all four walls of Zhuangzi were placed under the blockade of cannons, and the four turrets made of cement and stone were defended by dozens of musketeers.

In addition to Dong Zhuangzi, Chen Xian also planned to install small cannons on the defense towers of all the small Zhuangzi.

Of course, all this will have to wait until Chen Xian completes his experiment on cannon casting.

In addition to the trial production and improvement of cannons and the exploration and training of cavalry, Chen Xian also began to try to manufacture ether at the same time.

After the last battle, in the treatment of the wounded, the survival rate of the wounded was only a pitiful less than one-third, and among those who died, a large part of them were forced to operate because there was no anesthetic, and they died of pain.

For the death of the enemy, Chen Xian's medical soldiers did not feel distressed, but Chen Xian looked very uncomfortable.

He was upset not because he sympathized with the wounded of the enemy, but because he knew that he would not always be so lucky.

In this battle, relying on the artillery that appeared on the battlefield for the first time, Chen Xian won easily, won unexpectedly, and had almost no casualties himself, but this does not mean that they will never have casualties, if the next time, there are a large number of wounded under his men, Chen Xian will never tolerate the survival rate of only one-third of the wounded.

In order to improve the survival rate of the wounded, Chen Xian feels that the most urgent thing at present is anesthetics.

Without anesthetics, Chen Xian had to forcibly trap the wounded in a special operating bed, and the process of surgery was worse than killing pigs, and the cause of death of many wounded soldiers was not postoperative infection, but life and death.

Chen Xian knew very little about anesthetics, he only knew that ether had anesthetic effects, which was an early medical anesthesia, and he still remembered that when he was in junior high school, there was an experimental class to make ether from alcohol.

The process of the experiment is very simple, mixing alcohol and concentrated sulfuric acid to heat it, and ether can be obtained at a certain temperature, but unfortunately Chen Xian can't remember what the heating temperature is.

It doesn't matter if you don't remember the temperature, Chen Xian is used to it now, and spends a lot of energy and trial and error to determine something that you only need to search the Internet to know before.

Now the key question is where does the concentrated sulphuric acid come from?

In modern industry, there are five very important basic products, which are called three acids and two alkalis, namely sulfuric acid, hydrochloric acid, nitric acid, caustic soda, and soda ash.

Among the three acids and two bases, sulfuric acid was the first to be manufactured, and this chemical industry was once known as the mother of modern chemical industry.

Around the 16th century, Europeans invented the lead chamber method to produce sulfuric acid in order to bleaching cloth......

The above historical knowledge about sulfuric acid does not come from Chen Xian's knowledge reserve, but from the information of the Internet writer.