Of course, Sun Yuanhua did not have as many evil thoughts as Zhang Chu, after listening to Zhang Chu's introduction, he sat in the four-wheeled carriage and felt the feeling of stability and comfort, and praised it in his heart, this wonderful idea can really change people's lives. Pen, fun, and www.biquge.info

As a capable person who is both devoted to research and hands-on, he quickly thought of a question, so he asked: "This four-wheeled carriage requires a flat road, but where to find so many flat roads, this road repair and maintenance are a big project." ”

"It's a real problem, so most of the car is still only used in the city. However, I have found a way to build a road that will not be afraid of water and rain and will not break for many years. Mr. Sun looked to see if the road outside was a little different. After Zhang Chu finished speaking, he pointed out the car.

"The road is black." Sun Yuanhua slowed down the car and stretched out his head to observe outside the car, and then simply jumped out of the car, jumped a few times on the road, and buckled the stones on it with his hand regardless of the image, and found that the road surface was indeed very strong.

"The pavement is made of a layer of asphalt and gravel after the roadbed is rolled and solid, and the pavement is very strong and smooth." Zhang Chu is very confident in the asphalt road of the Ming Dynasty, and it is still early to run overloaded vehicles on the road.

"Where did you get so much asphalt?" Sun Yuanhua's scientific knowledge is still very rich, and he understands what this asphalt is.

"We have drilled oil wells in Yanchang, which can produce thousands of pounds of oil every day, and after refining and separation, we can produce a lot of gasoline and asphalt. We have paved asphalt roads in several major cities and will pave thousands more of them in the future. Zhang Chu thought of the feat of connecting villages and villages with roads in later generations, and felt that he had a long way to go.

"There are thousands of catties of oil output every day, so how much fierce oil do you have?" Sun Yuanhua has often been involved in wars recently, and the first thing that comes to mind when he hears about oil is fierce fire oil.

"It should be a lot, in the past few years, it has been transported to the castle in tin barrels as soon as it is produced, and I don't know the specific number." Zhang Chu didn't want to scare Sun Yuanhua, so he ambushed the specific amount of gasoline produced.

"Can you take out some of the fierce fire oil and transport it outside the gate to strengthen the defense there." Sun Yuanhua is a person who has been on the battlefield, and when he knew that everyone was desperately slashing, a flame erupted fiercely. I'm still thinking about how to strengthen the defense of the city outside the gate.

"We thought about it, but the emperor didn't necessarily agree, and many of the firearms that Mr. Sun studied could not be used on the battlefield." Zhang Chu knew that the emperor had never been burned and didn't know how powerful this thing was, so naturally he wouldn't pay attention to the production of oil, let alone believe his words as a thief.

"Hey!" Sun Yuanhua sighed helplessly, and now he remembered his identity.

"Let's go, get in the car, let's go to the steel mill to see Mr. Sun's favorite cannon, it's more powerful than this." Zhang Chu was embarrassed to see that he had poked Sun Yuanhua's sore spot, so he immediately changed the topic.

Sitting in a comfortable carriage listening to Zhang Chu talk about the various changes in the territory of the security army, Sun Yuanhua was in a complicated mood, Da Ming encountered unprecedented difficulties, and the one who could solve these difficulties turned out to be an anti-thief, although this anti-thief said that he wanted to return to the imperial court, but judging from his speech and demeanor, he did not respect the emperor very much, and it is difficult to say how long this kind of person can endure those officials in the imperial court. Thinking about the dangerous fortress on the border of Zhongyang, the fierce fire of fire oil falling from the sky, if they really could forge an artillery cannon in less than half a month as Zhang Chu said, Sun Yuanhua really couldn't think of any army of the official army that could attack the territory of the security army. Can you really cast a cannon in half a month? Sun Yuanhua is still skeptical about this, Zhang Chu's method seems to be feasible in theory, but it is unbelievable when it is really done. Sun Yuanhua was the one who personally presided over the casting of cannons, and it took almost half a year for the officials and soldiers to cast a cannon in order to wait for the mold to dry thoroughly. After passing many checkpoints, they finally came to the artillery factory of the security army, and the workers saw Zhang Chudu greeting him from afar but did not stop their work.

Sun Yuanhua immediately noticed the difference here, Zhang Chu, as the big boss of the security army, was the supreme leader here, and the low-status craftsmen were neither afraid nor resentful of him, and behaved very affectionately and casually, only a few people who seemed to be factory leaders came to lead the way for them, and the others couldn't even salute when they saw Zhang Chu.

"Our senior craftsmen here are paid more than some of my officers, and for ease of work and safety, there is no kneeling here." Zhang Chu knew what Sun Yuanhua was thinking, so he explained to him.

The tall factory buildings and the roaring sound of machines are very different from the cannon casting workshops of the government where Sun Yuanhua once went. Especially when he saw the huge iron-making blast furnace that was flowing out of molten iron, Sun Yuanhua was even more shocked and speechless.

When they came to the vicinity of the iron-making blast furnace, they were catching up with the blast furnace to produce iron, for the sake of safety, Zhang Chu did not let everyone get too close, you can watch from a distance, Sun Yuanhua roughly estimated the amount of iron, and was frightened by the output of this blast furnace, look at the surrounding more than one blast furnace, plus Zhang Chu introduced that these blast furnaces can continue to produce for several years without stopping, Sun Yuanhua is even more calm, if Zhang Chu has a few more such blast furnaces, all the security forces can be wrapped with steel. If Zhang Chu is unwilling to surrender, in the face of an iron army, it will take a lot of effort for the official army to exterminate it. When Sun Yuanhua knew that he could directly train steel until the next process, he no longer thought about how to exterminate the security army, but felt that the end of the Ming Dynasty was coming.

Coming to the most critical cannon casting workshop, looking at the busy workers and the artillery in different assembly stages in the workshop, Sun Yuanhua finally believed that Zhang Chu said that a cannon could be cast in ten days. And in these ten days, more than one artillery piece was cast. The artillery manufacturing of the Security Forces has also been divided into different processes and manufactured in batches.

In the battle of Yuncheng, starting from the discovery of the official army digging pits to avoid artillery bombardment, Zhang Chu knew that he also needed to further strengthen the strength of his artillery, and the power of using black powder to fire solid shells was not great enough, and there were spears and shields in the world, and with the wisdom of the people of the world, he would soon think of ways to prevent artillery and muskets. However, the development of new gunpowder and flowering shells was fraught with difficulties. Zhang Chu had no choice but to increase the power of artillery on the existing basis, and the requirement to make larger artillery was very urgent.

Zhang Chu took Sun Yuanhua to the artillery test site, where the newly manufactured and heavy artillery of the Security Army was being test-fired.

Sun Yuanhua started by casting artillery, and he was more familiar with artillery, looking at the size of the security army's artillery and the weight of the shells, Sun Yuanhua couldn't believe that such a heavy thing could be used for combat.

At the beginning, the naval guns on the Portuguese warships he bought were regarded as artifacts by the imperial court, and the emperor also named the cannon a general. The artillery was simply too small compared to the guns of the Security Army.

When the artillery of the security army continued to fire, Sun Yuanhua knew that there was no need for Zhang Chu to invite him to Shanxi, and the artillery technology of the security army was many times more advanced than him.

When the shell fell seven or eight miles away, Sun Yuanhua was shocked and thought: "This Zhang Chu won't go to Beijing with these cannons." (To be continued.) )