Rumble!

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

The people in the busy God Workshop in the courtyard were startled and hurriedly looked for prestige.

Then I saw that high in the sky of the Divine Workshop, under the pale blue barrier, a light green flame bloomed, like a huge blooming green flower.

It was a fairyland.

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

"How?" 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 to speak out were Huoyuan and Gongliang, and they hurriedly ran to them: "Master Qin, that thing just now is the fireworks and firecrackers you asked us to make earlier?"

"Not bad."

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

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

However, Master Qin, why did the color of that flame take on a green color?"

Qin Feng replied, "Do you remember the tiny metal that you were asked to add to it in the first place?

Different metals take on different colors at high temperatures, and I call this phenomenon the flame reaction, and that's where the colors you see come from."

"Flame reaction?" Huoyuan's eyes were excited.

"It's been a great benefit, it's been a great benefit." Gong Liang took out a notebook out of nowhere, and it was densely packed with notes.

Qin Feng glanced at it slightly, and the content recorded in it was all the things he had talked about in the opening hall.

In my last life, if I had been so serious about listening to lectures and taking notes, I wouldn't have failed the 985 exam, and Qin Feng had a strange look on his face.

He didn't continue to pay attention to the two people, but turned sideways to the white-clothed boy who bowed his head and asked, "How about it, this thing should be more than enough as a congratulatory gift, right?"

Ya'an came back to his senses, "You can order a few more for me to see."

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

Ya'an thought about it carefully, and it made sense, so he planned to let Wang Xu put away the fireworks, and he also thought in his heart that later, as a princess, he could let the Shengong Workshop deduct some gunpowder from the rest of the place and make more fireworks.

But at this moment, Liu Jianli, who was dressed in white, suddenly spoke, "I want to take another look."

Qin Feng didn't say a word, and immediately took out a few more firecrackers from the wooden box.

Ya'an opened her mouth, looking a little sluggish.

This difference is too obvious.

Looking at the two people holding hands and smiling happily under the brilliant fireworks.

Ya'an, who is alone, is like a defeated dog.

After a stick of incense, Qin Feng said helplessly: "Isn't it just to order a few more of you, you can use this expression, it's a big deal that I want to ask the old man to make more for you."

Ya'an ignored it, just glanced at the wooden box with only more than ten firecrackers left, and sneered: "After the advent of gunpowder, the demand for gunpowder in the imperial court, the army, and the demon slayer division has increased day by day.

Moreover, saltpeter ore is already scarce, and when raw materials are limited, even if some fireworks can be made, it is extremely limited."

Qin Feng's face froze, this is true, after all, the old man said the same thing just now.

He thought for a moment, suddenly thought about it, and then took out an object from his bosom, which was the transformation box that he had obtained from the people of the Divine Workshop earlier.

"What is this?" Ya'an was puzzled.

"This thing is called the Transmogrification Box, and the specific effect is."

After some explanation, Qin Feng said, "This thing should be borrowed from you, on the night of the celebration, you can use the transfiguration box to reflect the scene presented by the fireworks.

In this way, the shortage of fireworks can be solved

problems."

"That's all there is to it."

After Qin Feng and the others left from the Divine Workshop, Ya'an went and returned.

The fire wall in the courtyard was curious, "Why did you come back again?"

"Something fell in the attic." Ya'an spoke lightly.

"The old man's attic is not allowed to enter and exit at will, tell me what you left behind, and I will help you get it." Kazugaki raised an eyebrow.

In addition to his own family, those who can enter the attic at will are Qin Shi.

If the other party followed Master Qin to enter together, it would be fine, but if he came alone, it would obviously be unqualified.

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

Huoyuan was a little surprised in his heart, but the old man had spoken, so he naturally didn't ask too much and got out of the way to the attic.

Ya'an came to the floor where the old man was and said directly: "There are still five days to go before the new ceremony, how many fireworks can be made?"

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

Yes, the old man knows Ya'an's true identity, after all, the treasure weapon on Ya'an's body that can hide his breath and change his appearance and body shape is itself from the old man's hand!

Ya'an sighed: "Why does the old man ask knowingly, if I am the head of Jubao Zhai, I am afraid that I will not even be able to enter your attic, right?"

Yuan Zhai put down the drawings and tilted his head to look: "If you can get the approval of Emperor Ming and detain some of the gunpowder from the imperial court, the Shen Workshop can make nearly 100 more fireworks for the princess."

Hearing this, Ya'an agreed after a little thought.

Compared with the unsuccessful brother, she, the princess, is more loved by her father, and it is not difficult for her to get some gunpowder.

After the matter was finalized, Ya'an was about to leave, but suddenly thought of something, and asked in a moment, "Why are you so respectful to that guy, is it because the immortals are drunk with gunpowder?"

The last time I came, I happened to see him lecturing you, what the hell is he teaching you?"

Yuan Zhai didn't answer, just casually threw out the previously recorded physics book.

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

Then she was immersed in the whimsical knowledge of the book, and she couldn't extricate herself.

"You studied in the hands of the Heavenly Supervisor of the Haowen Academy, you should know how imaginative this knowledge is.

It's a treasure for us craftsmen."

Ya'an was silent for a long time before he spoke again and asked, "What he said in this book?"

"According to that kid's meaning, there is a teacher behind him, but the truth is unknown." Yuan Zhai replied truthfully.

"You're not curious? The people who can write this book are not idle people." 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 it."

Ya'an was speechless, it was no problem to say this, but she just wanted to figure out where Qin Feng was taught.

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

"I can take this book back and read it."

Before she could finish speaking, the physics book had disappeared from her hand.

Yuan Zhai said, "I have already taken the matter of fireworks to heart, so I won't give them away."

Ya'an: "."