A crown princess who doesn't do infrastructure construction isn't a good doctor.

By the time Qin Suiyou realized what was happening and tried to stop him, it was too late; Beitang Yan had vanished in the blink of an eye.

Qin Suiyou was stunned for a moment, then muttered, "This guy didn't actually go and ask Zhu Yu, did he? Is he that reckless?"

This guess was confirmed when Beitang Yan returned. As soon as he entered the door, he said with a proud voice, "Wife, I found out what his talent is!"

Qin Suiyou rubbed his forehead, shook his head with a helpless smile, and then asked Beitang Yan to sit down first.

Why did you just ask them so directly?

Beitang Yan said matter-of-factly, "Since you can't see it yourself, then you should ask him. Even if it's a potential deep within himself that he hasn't discovered, there should still be some signs that he can sense, otherwise, what's the point of growing up like this?"

For a moment, Qin Suiyou was speechless, so he could only ask gently, "So... what did you find out?"

Beitang Yan didn't rush to speak this time. After rolling his eyes a few times, he said, "I guess I've done a good job, so can I ask for a reward?"

Qin Suiyou raised an eyebrow. "What reward?"

"Hmm... I want a fighter jet model."

This is what Beitang Yan saw in a book. It is said that the fine ones are made according to the scale of real airplanes, and some can even fly. Except for not being able to carry people, they are almost indistinguishable from real fighter jets. Since we can't fly real ones yet, it shouldn't be too much to ask for a model, right?

"You have quite lofty ambitions."

Looking at the expression on the man's face, Qin Suiyou knew that what he wanted was definitely not the most basic model that could only be used as a decoration. However, seeing how sincerely he wanted it, if he remembered correctly, he did bring a model with him. There was another one in Zhongzhou City, and the previous basic work was carried out on the research on that model.

After thinking for a moment, Qin Suiyou decided: "Why don't you make one yourself? I'll give you the blueprints and materials, and I can also give you some guidance."

It wasn't that Qin Suiyou was reluctant to part with the model in his space. He was just thinking that if Beitang Yan could research and create a flightable model based on a scale of a real fighter jet, his understanding of fighter jets would be much deeper, which would also help him realize his "flying dream".

Beitang Yan wasn't disappointed after hearing this; instead, he asked excitedly, "When can we start?"

"Not yet. Let me check if I have all the materials. There are also some tools I didn't bring, so I might have to find a craftsman to make them."

Upon hearing this, Beitang Yan's smile remained unchanged.

"It's okay, I can wait."

After saying all this, Qin Suiyou asked, "What did you find out from Zhu Yu?"

Beitang Yan was looking at a book about models, and he even took out a candy and happily put it in his mouth without looking up as he replied, "He said he can do blacksmithing."

Qin Suiyou raised an eyebrow slightly, "Blacksmithing?"

"Yes, he said his grandfather used to be a blacksmith and taught him to forge iron from a young age. However, he was too thin and weak for a typical blacksmith, and not very strong either. So he started making small items. I almost forgot, he also asked me to give this to you."

As they were talking, Beitang Yan took out a small iron ball from his sleeve.

After Qin Suiyou took the iron ball, he held it between his fingertips and rotated it to examine it for a while. Then, to Beitang Yan's surprise, he threw the iron ball out of the window onto the open ground.

As the iron ball hit the ground, a loud bang was heard. It wasn't very loud, not even as loud as a regular firecracker. However, at the same time as the bang, the iron ball broke apart, and a cloud of black ash with a slight gunpowder smell instantly splattered in all directions.

Beitang Yan's face immediately turned ugly, and he was about to get up when Qin Suiyou quickly pressed him down.

"what happened?"

Beitang Yan pointed to the center of the black ash and said angrily, "He wants to harm you. I'm going to arrest him."

At this moment, the two people practicing martial arts in the middle of the courtyard ran over, while Jinzhu and Luoxian, who had already packed up their tools and returned to their rooms, also came over in a flustered manner upon hearing the sound. According to the sound, there was a series of footsteps not far away.

Seeing the worried crowd gathered around, Qin Suiyou remained calm and said indifferently, "There's nothing wrong here, don't worry. Go do what you need to do, don't crowd around here."

Beitang Yan wanted to order a few men to capture the audacious Zhu Yu, but Qin Suiyou stopped him in time. The men outside saw nothing unusual except for a patch of black ash, so they obeyed and returned.

Du Heng smelled a familiar scent in the air, but seeing that Qin Suiyou didn't seem to notice anything amiss, he pulled Liu Yao back to their original spot and continued.

Finally, only Zhu Yu remained at the scene, the others who had come earlier already heading back. He lowered his head slightly, walked to the study door, and knocked on the door.

"come in."

Seeing that Qin Suiyou was still politely letting the "culprit" in, Beitang Yan was very dissatisfied, but he still looked at Zhu Yu warily, fearing that he might bring out something powerful.

After entering the room, Zhu Yu seemed unaware of Bei Tangyan's gaze and calmly sat down opposite Qin Suiyou at his prompting.

"I just tried out what you made without thinking. You don't mind, do you?"

Zhu Yu gave a shy smile, "I originally asked the young master to give it to you so that you could take a look at it for me, how could I mind?"

"That thing can explode! You never told me what it does, it's so dangerous! You're up to no good!"

Beitang Yan was furious at the man's innocent expression. He was angry not only at the man but also at himself for being so careless. He hadn't even figured things out before handing such a huge potential problem to his wife. He would go crazy if anything went wrong!

However, after Beitang Yan finished speaking, Zhu Yu was filled with surprise and confusion.

"Wha, what?"

Seeing that this person still showed no remorse, Beitang Yan was about to attack, but Qin Suiyou skillfully held him down and said, "What was the purpose of that statue you made in the first place?"

Zhu Yu pursed his lips and said, "There are some lime powder, carbon powder and sulfur powder that I collected myself. I originally wanted to make it for self-defense. The little ball has a small mechanism. Pressing it will release the contents. It can also be used to start a fire in the wild."

Beitang Yan listened to Zhu Yu's words with suspicion, then revealed a contemptuous expression.

"Who knows if you're lying to clear your name? Besides..."

“A-Yan”.

After Qin Suiyou called out, a faint look from him silenced Beitang Yan.

"The explosion over there just now was caused by that thing you made. As long as you hit it with a little force, the contents inside will react quickly and cause an explosion. It's a pretty good weapon, but the technology is still too weak, the stability is very low, and it's easy to hurt yourself or others."

These words made Zhu Yu think of something, but he didn't say anything. He just stared straight at Qin Suiyou, trying to hear something else from him.

However, Qin Suiyou only asked, "Do you know many characters?"

Zhu Yu shook his head. "He only knows the names of a few people in the courtyard and some simple words."

As he spoke, Zhu Yu lowered his head, seemingly somewhat ashamed.

Since Du Heng and Du Ruo arrived, he had the brother and sister teach a few people to read from time to time. Several people who were already literate and those with good talent no longer needed the brother and sister's help, but Liu Yao, who was physically strong, and Zhu Yu were a little slow in this regard.

Qin Suiyou smiled and said, "It's alright. You can have them take you. I'll find some books for you to read in a bit, and I'll ask someone to help you with any words you don't recognize."

Zhu Yu looked up at Qin Suiyou and then slowly said, "Yes."

When he got the book, he saw the simple and easy-to-understand illustrations and his whole demeanor became much more lively. He then stood up and bowed deeply to Qin Suiyou.

"Thank you, Lord Zheng!"