In the sky above the Logistics Mansion, fireworks were lit, although it was only a monotonous orange and yellow, but it still attracted the attention of the entire palace......

"Did it work?"

On the roof of Qifeng Pavilion, the empress was originally carrying a wine jug and was admiring the bright moon in the sky, but the bright light and roaring sound of the fireworks suddenly set off in the logistics mansion instantly caught her attention.

"Good job......

The empress was quite happy, she was naturally very clear about what Lin Zifan had been busy with in recent days, and at the same time, she also knew that Lin Zifan would definitely be able to make fireworks.

After all, on her birthday, Lin Zifan had taken out 'homemade' fireworks, and now, in order to train people from the Ministry of Industry, she has delayed it again and again.

"Look, it's fireworks!"

"This is the direction of the Logistics Office, right? Hey, I've heard that the Logistics Office has been busy with this matter recently, and there is also the help of the Ministry of Industry, has it finally been done?"

"It's beautiful...... This firework is huge!"

Everywhere in the palace, the palace ladies were amazed, watching the fireworks burst into the night sky, although it was only a flash in the pan, but it was also beautiful and brilliant, and the eyes were full of small stars.

And this time there seemed to be a lot of fireworks, which did not stop for a moment, but they were set off for more than ten minutes, which made the people in the palace addicted.

......

Finally, the fireworks stopped, Lin Zifan retracted his gaze, and in the logistics mansion, he could clearly smell the pungent smell of gunpowder after it was burned, and wisps of green smoke were drifting away with the wind......

"Fireworks, the pollution to the environment is really big, fortunately, the environment in the feminist world is very good, just fireworks, it will not have any impact on the environment......"

"As for the rest...... After that, you should try to pay attention to it. ”

Lin Zifan whispered to himself, as a traverser, he can confidently say that he understands the importance of protecting the environment better than anyone else in the feminist world!

But now, everything is just beginning, and there is no environmental protection or anything.

What's more, the current Datang is still in the stage where it has not solved the problem of food and clothing, and it has not even been able to solve the problem of food and clothing, and it still cares about environmental protection?

It's like letting a beggar care about national affairs, which is completely difficult for a strong man, and there is no use for it.

Therefore, Lin Zifan just secretly remembered this point and asked others to pay attention, but I was afraid that others would treat Lin Zifan as a fool......

"My lord, the gunpowder has been successfully made, and next, shall we start working on grenades?"

Xiong Chumo and the Li sisters were very excited, even if it was dark now, they were still in good spirits.

Seeing the fireworks they made successfully bloom in the night sky was too shocking for them to calm down for a long time!

Even now, they can't believe that the fireworks that burst into the sky were made by their own hands, and it feels like they are in a dream.

"Grenades are naturally going to be made, but they are not ...... now" Lin Zifan shook his head slowly: "The preliminary test of fireworks was successful, and next, a lot of improvements are needed." ”

"For example, when fireworks come off, they take on different colors, different shapes, different sizes, and so on. ”

"Fireworks are easy to make, but there is a lot of knowledge to learn about how to make them well. Early tomorrow morning, I will personally guide you to make bright beads and how to control the size and shape of fireworks, and in the next half month, you will do your best to grasp and make fireworks!"

"You can't disclose the core technology, but other trivial tasks, such as transporting materials such as dirt, can be helped, and you can be responsible for making the fireworks. ”

"I want you to make no less than 30,000 fireworks in half a month, but is there a problem?"

"Thirty thousand?"

The girls were dumbfounded, and they didn't say anything for a long time......

"Too much?" Lin Zifan asked.

"My lord, no...... I'm wondering, if there are no less than 30,000 in total, how many will it be per day?"

Lin Zifan: "......"

How the hell did I forget that this was a bunch of math idiots?

He shook his head and smiled: "According to the calculation of a total of fifteen days, about two thousand pieces per day, on average, about three hundred pieces per person per day, of course, if you can make more, it will naturally be better." ”

"It turns out that it's only three hundred pieces per person per day?" the seventh girl instantly breathed a sigh of relief.

"Scare me a day, 30,000, I thought it was many, it turned out to be not much!"

"It's really not much, don't worry, my sisters, we promise to complete the task!"

Lin Zifan smiled helplessly: "That's good, remember to follow the method I taught you after you do it, pack it in separate boxes, and all kinds of specifications are required!"

Due to the tight time, Lin Zifan taught them the so-called packing method is actually very simple. The most common is four by six, that is, four six by twenty-four, in addition, there are twelve, six in a box, and even a single one.

Considering that the needs of customers are different and the degree of wealth is also different, it is natural to launch more 'varieties' so that as many people as possible can choose their favorite fireworks.

As for the military signal flare, Lin Zifan has no intention of studying it for the time being, at least in the next half a month, he will not move!

It's just because he has more important things to do in the past half a month, and if this matter is done well, it will be enough to change the pattern of Datang in several nearby countries and even the entire feminist world in the future!

At night, Lin Zifan lay on the bed, but he couldn't sleep for a long time......

"Now, everything is on the right track, the asphalt road has begun to start, and due to the addition of the four major earth cultivators, the progress has been greatly improved, judging from the task prompts, it has exceeded sixty kilometers, and one hundred miles ......of asphalt road has been completed in a month, and there is no problem at all."

Nowadays, the most important road is naturally from Heishuize to Chang'an!

And before, the three armies were sent to Heishuize, although everyone didn't say it explicitly, but they all had some dissatisfaction in their hearts, but after seeing the asphalt road and testing it themselves, their attitudes all changed one hundred and eighty degrees!

At this moment, the people of the three armies simply regard Hei Shuize as a heavy treasure to guard, if anyone dares to break in, they can be in a hurry!

Even if the empress asked them not to protect Hei Shuize now and let people from other countries break in, they would most likely disobey the emperor's orders!

The strength of asphalt roads can only be understood by those who have really seen it, and how important a good road is, no one knows better than soldiers!

If Datang had been able to spread all over the asphalt road earlier, their marching speed would have been at least twice as fast! What does this mean, do you need to say more?

When repairing the asphalt road from Heishuize to Chang'an, after receiving Lin Zifan's notice, Yunshang also specially sent people to transport all kinds of asphalt concrete to the paper mill over a long distance, and the construction has started at this moment!