Cement is what Ye Chunqiu cares most about now, because the wonderful use of cement is to smooth the road surface.

In this era, although horse-drawn carriages have appeared for thousands of years, they are still not popular enough in the transportation of high-ranking officials and even many goods. It is not because of the cost. The fundamental problem is the road. Because the road is uneven, even the official road is paved with gravel. This has led to the minimum comfort of the carriage. Who would like to endure the violent shaking of the carriage at all times? If you encounter a big pothole, it will be enough for the whole person to jump up in the carriage and hit it all over the head.

Therefore, the most convenient carriage has become a means of transportation that is despised. This is not counting. In order to avoid bumps, carriages often cannot move fast. As a result, people sitting in carriages are even slower than sitting in sedans. Because of this, most officials would rather hire manpower to sit in sedans than enjoying the so-called "privileges", it is a last resort.

The same is true for using a carriage to deliver goods. If you carry too much cargo, it will be difficult to pull the horse in a bumpy road. As a result, once you get deeply trapped in the mud, you don’t know how much effort it will take to pull it out. Instead, it is not as convenient as using a human-powered cart.

It is precisely because of the road problems that the use of carriages is very short, which also makes the carriage technology in the East lag far behind that in the West. This is also an important reason why Ye Chunqiu attaches importance to cement.

With cement, this mirror-smooth road can minimize bumps, greatly improving the comfort of the carriage and road transportation capacity, and laying a good foundation for carriage transportation in the future.

With the road, the next step is to improve the structure of the carriage. The original wooden structure can be replaced by rolling bearings. Not only does it need to increase the speed of the car, but it also needs to work hard on the load capacity of the carriage.

These plasterers carefully grind the cement poured into the roadbed with a shovel, and the cement concrete was made of fine sand. With a shovel, the blade suddenly became flat like a mirror. Many craftsmen were not yet skilled, so they were worried. Ye Chunqiu was supervising the worker just in case, and did not dare to be careless.

After a few days, a road of hundreds of meters was finally completed, and this was just an early test section.

After the sun came out, the entire cement road had already hardened, so Ye Chunqiu ordered people to pull the carriage and let the carriage walk back and forth on this section of the cement road. After everything was normal, Ye Chunqiu breathed a sigh of relief.

Ye Chunqiu has now made a long list of workshops. In addition to the planned watch workshops, steel workshops, carriage workshops, and cement workshops, the hottest selling now is a secret workshop specially set up by Ye Chunqiu. The workshops are very small, only seven or eight people, and it is more like a small laboratory, where they mainly make gunpowder.

Ye Chunqiu is not very interested in the current black gunpowder, because of the production demand of crystal workshops, as well as the construction of cement workshops, roads and Zhenguo Mansions, mining has become the biggest problem for suppliers at present. A large number of manual digging of ore is time-consuming and labor-intensive, and it is also quite difficult. Therefore, if you want to dig up mountains, the best way is to use gunpowder to explode.

Ordinary black gunpowder is not easy to preserve, and it is a forbidden object of the court, and its stability is extremely poor, not to mention that it is too small to deal with ordinary mines, but when it comes to rocks, its effect is minimal.

Therefore... whether it is for the new army of Zhenguo or for the production needs of other workshops, a new type of gunpowder must be made quickly. Ye Chunqiu hired a group of craftsmen and signed a contract for selling their bodies with them, and then began to develop it secretly.

Ye Chunqiu has high requirements for this kind of gunpowder. On the one hand, it is stable. Otherwise, if there is a collision or improper storage, a Baozha accident will occur. Wouldn’t it be a ghost?

In addition, it is required that its power is much stronger than black gunpowder. In the end, Ye Chunqiu chose **********.

******* was developed by Nobel three hundred years later. It is a very powerful explosive. However, because it is very sensitive, it will be baozha when it is shaken, impacted and cremated, which is very dangerous and therefore lacks practical value.

Think about it, what will happen if a bottle of inconspicuous looking ******* suddenly explodes just by accident, and its power is ten or a hundred times that of black gunpowder?

Ye Chunqiu could hardly think without thinking, this is a traitor.

However, after that, Nobel discovered that ********** will become very stable after adsorption with diatomaceous earth. Whether it is open flame or collision, baozha will not occur. Then the problem arises again. Don’t let you explode. If you hit it gently, you will have to explode. But now, when you blow it, you will die again, and you will not explode.

Well, ******* is actually good to refine, and there is no shortage of diatomaceous earth, so Ye Chunqiu must come up with a detonating device - ****.

Since the construction of this cement road, it is located in a temporary building in Zhenguo Mansion. It is surrounded by high walls on all sides and is airtight. Ye Chunqiu's secret laboratory is set up here. At this time, Wang Shouren brought several new army students here early in the morning.

Xu Jie, who followed Wang Shouren, had no idea what was going on. He only knew that the counselor of the royal palace brought him and a few comrades here. There was only a small door hole on all sides of the high walls. There were special people patrolling at the door. When they passed the door hole, they saw Ye Chunqiu wearing a kirin suit and muttering something with a few craftsmen. Xu Jie and his men rushed forward to salute.

Ye Chunqiu looked at them with a smile and said, "Today, please try something new. Well, there may be some dangers. If anyone doesn't want to, he can quit."

Xu Jie and others stood still, without any intention of retreating.

Wang Shouren was actually confused, but looking at Ye Chunqiu's serious appearance made Wang Shouren a little worried.

I saw a large pit in the middle of these acres of square walls, which was two feet deep. At the corner of the wall, a shed was built. Several craftsmen were carrying pens, as if recording and discussing something, except that, there was nothing.

Wang Shouren and Ye Chunqiu arrived in a corner and couldn't help but say, "Chunqiu, what's so dangerous? You have to let Xu Jie and the others do it?"

Ye Chunqiu replied simply and clearly: "Gunpowder."

gunpowder……

Wang Shouren was relaxed. He went to the border town when he was young and knew about the gunpowder used by the Ming army. This thing... well... it's okay.

(To be continued.)
Chapter completed!