After the Mid-Autumn Festival, the weather is getting cooler day by day, but Yan Yan's things are more, the real autumn harvest has begun, although Yan Yan doesn't have to go to the field to do things in person, but there are many stewards who come to her every day to talk back, and many major events in Zhuangzi still need her to take ideas.

At this time, Lu You was also busy, saying that the trebuchet they made still had a lot of defects, first, it was still too cumbersome, although it did not require more than 200 people to work together like before, but it still needed more than 100 people, and it was still a big gap from the trebuchet that the emperor required for more than ten people to operate, and second, what the emperor wanted was the kind of trebuchet that could be disassembled at any time, which was not only light and easy to transport, but also could hide from the enemy at a critical time.

Therefore, Lu You is not idle during this time, basically he gets up before dawn, and most of the people who enter the house at night are after dark.

On this day, Yan Yan thought that Lu Jin's first birthday was approaching, and she wanted to make a more commemorative gift for the child by herself.

Of course, toys are not Yan Yan's purpose, her purpose is to inspire Lu You to see if she can lead his ideas to artillery.

But the problem is that although she can imagine and depict this kind of thing, she is at a loss how to do it, because this must use carpenter's tools, and the pistons must be perfectly meshed together to generate momentum, Yan Yan asked herself that her handiwork must not meet the requirements, so she handed over this task to Lu You.

Lu You had really seen similar opportunities, so as soon as he heard Yan Yan's words, he quickly agreed.

To Yan Yan's surprise, three days later, Lu You really brought back a very smooth polished bamboo tube for Yan Yan, the bamboo tube is about one and a half feet long, about two inches in diameter, and there is a thin rope near the third of the tail, which is different from Yan Yan's design.

"Jin Niang, watch Daddy make a trick for you." After speaking, Lu You put the head of the bamboo tube at the gap in front of Lu Jin, pulled the rope, and soon a small rooster made of red paper popped out of the head of the bamboo tube, and the little rooster was about the size of a baby's fist.

Lu Jin was stunned, and quickly pounced forward to pick up the little rooster, and then quickly raised his head and looked into the bamboo tube, waving his hands, "Daddy, daddy." ”

Seeing this, Lu You sent the bamboo tube to Lu Jin, taught Lu Jin to pull off the string, and soon a little pig made of red paper fell out of the bamboo tube.

"Husband, you are so powerful, how did you do this? This one is even better than I thought. Yan Yan's eyebrows and eyes also quickly bent, this surprise was too big.

Because this operation is much lighter than the piston designed by Yan Yan, and most importantly, this is the prototype of the artillery.

Lu You saw Yan Yan asking, but he didn't sell it, he took the bamboo tube to Yan Yan, and pulled open a lid from above, revealing the machine inside, several small bamboo pieces were connected together to make a small mechanism, and when the rope was pulled, the strength of the bamboo bounce up just ejected the small animal in the bamboo tube.

"Lady, this is what Master Yang came up with, Master Yang said that the toy you used to play with is not suitable for one-year-old children, this is just right." Lu You was afraid of hurting Yan Yan's self-esteem, so he hurriedly explained.

"It's really just right, thank you to Master Yang for me." Yan Yan said as he spoke

put the paper rooster back into the bamboo tube, then put the lid on it again, then picked up the bamboo tube and pulled the rope at Lu You, there is no doubt that the paper rooster inside hit Lu You, and then landed in front of Lu You.

It's a pity that Lu You didn't understand Yan Yan's purpose for doing this action, his mind was on his daughter.

Since he went home on the day of the fight and knew that his daughter would call her father, the first thing Lu You did when he went home every day was to hug his daughter, coax his daughter to call him dad twice and slobble on his face, which was something he never tired of, which made Yan Yan complain a lot about her lower status, because the first thing Lu You did when he came home was to find her before.

No, he was busy offering treasure to his daughter just now, and he put down the bamboo tube, he picked up Lu Jin, and was teasing the child to call Dad.

"Husband, when I saw this, I remembered something." Yan Yan couldn't do it, so he had to make his words clear.

"What?" Lu You saw that Yan Yan said it formally, but he also hugged Lu Jin and sat next to Yan Yan.

"You say, if this bamboo tube is not filled with small animals, but gunpowder, what will happen?"

"Gunpowder?" Lu You was taken aback, he obviously hadn't thought about this problem, but as soon as Yan Yan reminded him like this, he understood what Yan Yan meant.

Although he had never fiddled with gunpowder, he also knew that once the gunpowder exploded, it would definitely be much more lethal than stone, that is, if this kind of spray canister type military equipment was made, it would definitely be more powerful than a trebuchet.

It's just that there is one point, the power of the gunpowder explosion is so great, will it burn this bamboo tube?

Lu You thought so and asked so, but this time it was okay, as soon as the words came out, without waiting for Yan Yan to remind him, Lu You figured it out by himself, "You can use iron instead of bamboo, and iron will definitely not have an accident." ”

"That's it, husband, you take this toy to see the prince tomorrow, let the prince take you to see the emperor, don't say it's my idea, just say that it was thought of through this toy, don't worry about what to do next, listen to the emperor's arrangement." Yan Yan pondered for a moment and said.

The reason why she didn't take Lu You to see the emperor in person was also to exercise his own ability to deal with the world, so she couldn't come forward every time there was something, right?

In addition, she was afraid that the emperor would suspect her, and she never wanted to be famous.

For this reason, she also specially taught Lu You a set of rhetoric, saying that Lu You made a toy with a bracket to celebrate the child's first birthday, and Yan Yan thought of the military when he saw this toy.

This statement is more credible than Lu You's initiative to apply it to the military, and the key point is that this statement erases the fact that this toy with a bracket was Yan Yan's own idea, so that the emperor will not suspect that she is deliberately guiding Lu You to make artillery.

Lu You was a little puzzled when he heard this, and was just about to ask when, he suddenly remembered something, it was when Yan Yan just married into the Lu family, Yan Yan was lying on the kang and drew the drawings of the fireplace with charcoal, and was accidentally bumped into by Li Sui at that time, and Yan Yan seemed to have lied at that time, saying that these drawings were not drawn by her.