My wife is a sword god

boom!

Just when Ya'an was thinking a lot, firecrackers shot into the sky with a roar.

The people in the busy Shengongfang in the courtyard were startled and hurriedly looked for the voice.

Then, high in the sky above the Shengongfang, beneath the light blue barrier, light green flames bloomed, like a huge green flower in full bloom.

The scene was really like a fairyland.

Everyone was immersed in this beautiful scene, but this grand scene came and went quickly, like a flash in the pan.

"How is it?" Qin Feng turned around and asked with a smile, but no one answered.

Everyone obviously hasn't recovered from the scene just now.

The first ones to speak out were Huo Yuan and Gong Liang. They hurried forward and said, "Master Qin, were those fireworks and firecrackers you asked us to make earlier?"

"good."

"It's strange. After this thing was completed, we also tested it in the refining room, and we didn't see anything like this." Huo Yuan scratched his head and said.

Gong Liang also said: "The explosion power of that thing is too small, we all treated it as a defective product, but we didn't expect it to have such an effect.

However, Master Qin, why is the color of the flame green? "

Qin Feng replied: "Do you still remember the tiny metal I asked you to add in it?

Different metals will show different colors under high temperatures. I call this phenomenon the flame reaction, and the colors you see come from this. "

"Flame reaction?" Huo Yuan's eyes showed excitement.

"I've benefited a lot, I've benefited a lot." Gong Liang took out a notebook from somewhere, which was full of notes.

Qin Feng glanced briefly and found that the contents recorded in it were all things he had talked about in class.

If I had been so serious about taking notes in lectures in my previous life, I wouldn't have failed the 985 exam. Qin Feng had a weird look on his face.

He did not continue to pay attention to these two people, but turned sideways to the white-clothed young man who lowered his head and pondered, and asked: "How about this? It should be more than enough to present this as a gift, right?"

Ya'an came to his senses and said, "Click a few more and let me see."

Qin Feng immediately refused: "This thing is a scarce commodity. If you order it now, what will you give to Emperor Ming then?"

Ya'an thought about it carefully and it made sense, so she planned to ask Wang Xu to put away the fireworks. She also thought that later, as a princess, she could ask the Shengongfang to seize some gunpowder from other places and make more fireworks.

But at this moment, Liu Jianli, dressed in white, suddenly said: "I want to take another look."

Without saying a word, Qin Feng immediately took out a few more firecrackers from the wooden box.

Ya'an opened his mouth, his expression a little dull.

This differential treatment is too obvious.

Looking at the two people holding hands under the gorgeous fireworks, with happy smiles on their faces.

Ya'an, alone, looked like a defeated dog.

After burning the incense, Qin Feng said helplessly: "I just ordered a few more for you. You need this look. At worst, I will find a way to get Mr. Yuan to make more for you."

Ya'an ignored it, just glanced at the wooden box with only a dozen firecrackers left, and sneered: "After the advent of gunpowder, the demand for gunpowder from the court, the army, and the Demon Slayer Department has increased day by day.

Moreover, saltpeter ore is scarce, and with limited raw materials, even if you can dig out some to make fireworks and firecrackers, it is extremely limited. "

Qin Feng's face froze, what he said was true, after all, the old man said the same thing just now.

He thought for a moment, suddenly a plan came to his mind, and he took out something from his arms, which was the transformation box he had previously obtained from the Shen Gongfang people.

"What is this?" Ya'an asked confused.

"This thing is called the Transformation Box, and its specific function is"

After some explanation, Qin Feng said: "Just think that I borrowed this thing from you. On the night of the celebration, you can use the transformation box to reflect the scene presented by the fireworks.

In this way, the problem of insufficient number of fireworks and firecrackers can be solved. "

"That's all it can do."

After Qin Feng and others left Shen Gongfang, Ya'an left and returned.

Huo Yuan in the courtyard asked curiously: "Why are you back again?"

"I left some things in the attic." Ya'an said calmly.

"Old man's attic is not accessible to ordinary people. Tell me what you left behind, and I will fetch it for you." Huo Yuan raised his eyebrows.

Apart from his own family, the only one who can enter the attic at will is Master Qin.

It would be fine if the other party entered with Master Qin, but coming alone was obviously not qualified.

But just as Huo Yuan was thinking this, the old man's voice came from the attic: "Let him come in."

Huo Yuan was a little surprised, but since the old man had already spoken, he naturally didn't ask any more questions and made way to the attic.

Ya'an came to the floor where the old man was and said directly: "There are still five days until the New Year's Eve ceremony. How many fireworks can we make?"

Yuan Zhai looked at the drawings in his hands and asked, "Are you asking this as the head of Jubaozhai, or as the princess?"

Yes, the old man knows Ya'an's true identity. After all, the treasure on Ya'an that can cover his aura and change his appearance was made by the old man!

Ya'an sighed: "Why should Mr. Yuan ask knowingly? If I were the head of Jubaozhai, I wouldn't even be able to enter your attic, right?"

Yuan Zhai put down the blueprint and looked away: "If you can get the Emperor's approval and withhold some of the court's gunpowder, the Divine Workshop can make nearly a hundred more fireworks for the princess."

Ya'an thought about it and agreed.

Compared to her useless brother, she, the princess, was more loved by her father. It was not difficult for her to get some gunpowder.

After the matter was finalized, Ya'an was about to leave, but suddenly thought of something, paused and asked: "Why are you so respectful to that guy? Is it because of Xianrenzu and gunpowder?

The last time I came, I happened to see him giving you a lecture. What exactly is he teaching you?"

Yuan Zhai did not answer, but just threw out the physics book he had recorded before.

Ya'an took the book, looked curious, and then flipped through it.

Then she was immersed in the fantastic knowledge in the book, unable to extricate herself.

"You studied under Master Tianjian of Haowen Academy, so you should know how fantastic this knowledge is.

This is like a treasure for craftsmen like us."

Ya'an was silent for a long time before she asked again: "Are all the contents in this book said by him?"

"According to what that kid said, there is a teacher behind him, but it is unknown whether it is true or not." Yuan Zhai answered truthfully.

"Aren't you curious? The person who can write this book is definitely not an ordinary person." Ya'an's tone was a little excited.

"So what? It doesn't matter where the knowledge comes from. As long as we can learn these, it's enough."

Ya'an was speechless. There was nothing wrong with what she said, but she just wanted to find out where Qin Feng's teacher was.

After all, the various strange ideas in that guy's mind always made her curious.

"I can take this book back to read."

Before she finished speaking, the physics book had disappeared from her hands.

Yuan Zhai said: "I have remembered the fireworks matter in my heart, so I won't send it."

Ya'an: "."