Li Cong saw Yan Yan sitting upright, so he guessed that she must be on guard again, so after a little flickering, he pointed to a stack of books on the kang table and asked, "Have you read these books?" ”

"Back to the emperor, I have only read some books on military equipment and the art of war, but my grandson has basically read it, and he is also slightly interested in the gossip of the five elements and Qimen Dunjia or something."

There's no way, Yan Yan wants to deny it, but the ready-made book is here, what else can she say?

At this time, she understood the taste, but she was afraid that the emperor would not only test her or buy her for the spray canister this time, but most likely wanted to see what secrets she had, after all, this kind of temporary spot check was the most difficult to prevent.

No, the emperor saw this labyrinth mold as soon as he came, and then found that this piston nozzle was not enough, and he thought about checking Lu Jin's toys, to put it bluntly, he just wanted to see if he could have some other revelations.

From another point of view, the emperor has not lost a courteous corporal, so Yan Yan can't bear to blame him anymore, how can emperors not be selfish since ancient times? But how many emperors can run to the courtiers' homes at every turn like Li Cong?

But speaking of which, Yan Yan understands a little, the emperor of this era does not seem to have as much power as the big pigtail emperor she saw in the TV series, and his speech is relatively free, although it is not as open as the Tang Dynasty, but at least there is no literary prison.

Yan Yan once heard Yan Peng say one thing, saying that Wen Wenshan, the left minister of the left and right, quarreled with Li Cong on the spot in order to oppose a proposal, and finally because Wang Shixiu of Zhongshu Province also stood on Wen Wenshan's side, this proposal was not passed in the end.

More than half a month later, it turned out that the emperor was wrong, Wen Wenshan was right, Li Cong not only did not give Wen Wenshan small shoes to wear, but apologized to Wen Wenshan in front of the civil and military officials.

Since then, the atmosphere in the court has been very lively, and it is basically free to speak.

Of course, it is not impossible for people to deliberately embarrass the emperor and stumble, but Li Cong is not stupid, it is best to use such a person to kill chickens and monkeys, so after a few battles, this kind of person gradually stopped thinking.

Besides, there's still the imperial history.

Thinking about it like this, Yan Yan also relaxed a little, and talked to the emperor about a few ideas about this piston nozzle, and she also had a source left and right, and she didn't read those military equipment books.

However, Yan Yan still didn't dare to say anything about the spring, this is a bit too unbelievable, and she has to think about it.

As he was talking, Qing Glaze brought Lu Jin's toys over, but it happened that Lu You also entered the door.

After Lu You's salute was finished, Yan Yan smiled and pushed him in front of the emperor, "Husband, the emperor is interested in handicrafts, let's come and explain to the emperor, I will accompany the queen and the princess and sister-in-law in the back." ”

Li Cong nodded when he heard this, in his opinion, Lu You is much simpler than Yan Yan, and if he wants to know something, it is much better to ask Lu You directly than to ask Yan Yan.

No, as soon as Yan Yan left, Li Cong took the piston nozzle and asked Lu Youlai, he wanted to know who first thought of this thing, which was very important to him.

If it is Yan Yan's words, it means that Yan Yan must be hiding her secrets, she must know the specific method or that she has seen this thing, but she is forced by the pressure of the outside world to say it directly.

On the contrary, if it is Lu You, this project will have to be grinded, and it is estimated that it will not be able to be studied in a year and a half.

Who knew that when Lu You heard this, he neither said it was Yan Yan nor said it was him, but walked to the desk and flipped out a book, and then found one of the pages, which introduced a method of firing a hidden weapon, using the principle of piston, using the push of the piston to launch a detoxification needle.

In addition, you can also fill the tube with poison or poison powder or something, and you can also use the piston to push it out, so that you can hit more people farther away.

In fact, when Yan Yan and Lu You mentioned this nozzle at that time, Lu You thought of this opportunity, but as soon as he told Master Yang, Master Yang felt that this force was too strong and not suitable for one-year-old children to play, so he made a mechanism that could be driven with a gentle pull of the rope.

But that also has a disadvantage, that is, he can't carry anything too heavy, and he can't spray far, so he started this piston type spray cylinder again under Yan Yan's prompting, just to see which one has the most power.

Li Cong saw that there was really such a thing in the book, but he didn't ask anything more, but picked up a few toys sent by Qingglaze, Tangram, Huarong Dao and Nine Rings He had seen, so he quickly put it aside, but what are these big traps and small circles?

Lu You saw that the emperor was holding the toy made of Yan Yan's drawings and dismantling it, and explained: "Back to the emperor, this is a toy used from the Nine Rings and Luban Lock Sets, in fact, it is not suitable for children to play. ”

The reason why Lu You specifically said that it was not suitable for children to play was because he found that the emperor seemed to be stumped, which was a bit embarrassing.

Li Sui on the side saw it, and hurriedly replaced the Luban lock in Li Cong's hand with a box with a bracket in his hand, "Father, look at this, this can be popped up." ”

Li Cong saw that there was a button on the box, and when he pressed the button, the box popped open from the inside, so he quickly put down the string of Luban locks and picked up the box, he was now interested in everything that could pop out.

It's a pity that the mechanism of this box is very simple, and Li Cong will know it at a glance, because it uses the principle of seesaw.

Putting down the box, the emperor asked about the progress of the Ministry of Industry, and then asked intentionally or unintentionally: "Have you also read these books?" ”

Lu You shook her head when she saw that the emperor was referring to the Qimen Dunjia category, "The lady has read books on military equipment, and she is also interested in the art of war, but she said that war is not just talk on paper, it is not a rigid routine, and it is necessary to combine many considerations of time, place and people to formulate a convenient and effective combat plan." ”

"Oh, how could she say this for no reason?" Li Cong became interested in this topic.

Lu You didn't think much about it, so he told Yan Yan about the two battles that Yan Yan had asked him about, one was the siege of the capital, and the other was Yan Peng's two attacks.

Li Cong groaned when he heard this, and Yan Yan also asked him the first question, but he didn't answer it at that time, because he felt that this situation was unlikely to happen, and he felt that Yan Yan was a little too worried.

However, afterwards, he seriously thought about this situation, and also asked some generals, and their answers were similar to Lu You's.

In other words, what those generals considered, Lu You and Yan Yan also considered, and these two people also considered a little more than them, that is, food.