In the era of black gunpowder, ordinary people only think that the dose of gunpowder is not enough.

But for Ye Chunqiu, his biggest trouble now is the problem of too large the dose. He must reduce the dose and reduce the dose to a safe value, otherwise the grenade would be equivalent to scrap copper and rotten iron.

He tested the arm strength of the grenade again and again, determined a safe range, and continued to reduce the dose, and recorded all the data. Finally, his hard work paid off. The grenade was barely available.

The emergence of grenades marked the emergence of the second branch of the new army in Zhenguo, which was completely cross-generational.

Ye Chunqiu selected Xu Jie, selected ten people, and began targeted exercises. In addition to the physical exercises in the morning, the practice of grenades in the afternoon was naturally the practice of grenades.

But they can't practice with real guys. At least in the early stage, Ye Chunqiu specially made props similar to grenades. What they had to do was to turn on the insurance every day and then throw the grenades out. This thing is like practicing arrows. The most important thing is to make perfect practice and not be careless, so people who must be steady and calm.

Xu Jie became the captain of this team. They not only had to conduct throwing exercises, but also had to understand the principle of parabolic parasites, and even during night classes, they had to review the impact of wind direction on grenades.

Most of the people brought by Ye Chunqiu, whether they are his students or those craftsmen, have a characteristic, that is, they solve problems through learning. Any new thing appears, besides trying it, and constantly explore better methods.

This is not because these people know how to be ambitious and hardworking in nature, but because Ye Chunqiu gave them hope.

As the weather gradually became hot, the entire economic development zone was like a steamer. However, in this month, the economic development zone had some new appearances. On this land of only ten miles in radius, the planned roads were ten miles, crisscrossed with tic-shaped structures, and Zhongzheng was Zhenguo Mansion.

As for the road, the construction was not fast. Although many foundations have been completed, the cement paving has been paved overnight. Although more than 70 plastering craftsmen have been paving day and night, they have only been paved for a mile and a half. It happened to be the distance between the Zhenguo Mansion building complex and the wharf. Fortunately, with this road, many infrastructure construction in the economic development zone has accelerated a lot. In the past, many raw materials were sent from the canal to the wharf, but due to inconvenient transportation, there were a lot of materials needed. Many times, the materials were not prepared in time. Now, relying on this first cement road, a large number of carriages have begun to transport goods.

Ye Chunqiu took a carriage and walked around here for a few laps. He felt... Of course, it was much worse than the experience in later generations. It was not the road problem, but the carriage. If the mechanical technology was added in the future, Ye Chunqiu even planned to study the territory and bearings of the carriage. Especially if the carriage had bearings, the resistance would be greatly reduced. The horse could easily pull the heavy goods forward, but even so, the experience of this cement road compared to other gravel roads or brick roads can also be described as instant killing.

But... the cost is really too high. Ye Chunqiu even felt that just building roads can make the crystal workshop bankrupt. Looking back, the most important thing at the moment is to make money.

Ye Chunqiu tasted the taste of having no money for the first time. Although the revenue of the crystal workshop has reached 40,000 taels of silver per month, this is definitely an astronomical figure in this era. But if it weren't for the increasing sales of crystals, Ye Chunqiu even suspected that the economic development zone would be unfinished.

Now the changes have begun here. There are people digging canals and building roads everywhere, and the foundation here in Zhenguo Mansion is complete. Ye Chunqiu chose to build it with cement concrete. Now this building covering an area of ​​nearly three acres has gradually revealed its prototype, and there are busy craftsmen everywhere. Ye Chunqiu even feels that as the craftsmen become more and more proficient in their skills, I am afraid that most of the infrastructure here can be completed before winter.

On this day, Ye Chunqiu still got up early. After practicing swords, an eunuch rushed to Ye’s mansion in a hurry. When he saw Ye Chunqiu, he said anxiously: “Ye Xiu, Ye Xiu, hurry, quickly... Enter the palace quickly.”

Ye Chunqiu was shocked when he saw the eunuch's panic look. He had never entered the palace for many days, but even the little emperor almost forgot about the matter of burying the country's government. Unexpectedly, the eunuch came to ask for someone at this time. Ye Chunqiu couldn't help but frowned and said, "Dad father-in-law, what's wrong?"

The eunuch hurriedly said, "The Empress suffered a abdominal pain last night and was about to give birth. His Majesty was very anxious. I asked us to invite Ye Xiu to the palace early in the morning. I don't know if she is giving birth now."

Ye Chunqiu remembered what Zhu Houzhao had said to him before, and did not dare to hesitate anymore and quickly entered the palace.

Empress Xia is about to give birth.

This is a very important matter. I am afraid that the whole court will be paying attention at this time. The crown prince is involved in national affairs, and for Ye Chunqiu, this matter is very important.

It would be fine if it was a girl. Once it was a boy, he would be the benefactor of the future emperor, and his true life-saving grace.

Ye Chunqiu did not have any concept of favoring boys over girls, but the current world is like this, and he couldn't help but pray silently in his heart.

So Ye Chunqiu rushed to the Forbidden City and then arrived at the harem under the guidance of eunuchs. At this time, Zhu Houzhao was paced back and forth in a side hall in Kunning Palace, waiting anxiously, and Empress Dowager Zhang was also here at this moment.

It is said that just a few days ago, a talented man had given birth to a boy. Although Empress Dowager Zhang was also happy to hold the emperor's grandson, she still had greater expectations for the children in Queen Xia's belly. At this moment, she was tense, with a serious expression, squinted her eyes slightly, and recited some scriptures in her mouth.

Ye Chunqiu rushed in almost panting. Zhu Houzhao looked up and saw Ye Chunqiu, his eyes lit up. He was about to speak, but unexpectedly, at this moment, the cry of a baby came from a distance.

This made the people in the side hall feel as if they were stabbed by a needle, and they couldn't help but cheer up. Zhu Houzhao looked at Ye Chunqiu, and Ye Chunqiu also looked at Zhu Houzhao. The two of them looked at each other's eyes and saw the joy from the heart from the other's heart.

At this moment, a eunuch came in carefully, and he smiled and broke the silence in the side hall.

"Congratulations to the Empress Dowager, congratulations to Your Majesty..." (To be continued.)
Chapter completed!