She transmigrated into a widow and farmed to raise vests.

After resting on the bed for a while, it was already broad daylight.

I quickly tidied up a bit and took the things out.

"General Lu, the document is ready!"

After Qin Yu finished speaking, he handed the items to him, "Take a look quickly. If there are no problems, you can send me back!"

Lu Chen noticed the weariness in her eyes.

I took the item from your hand and carefully opened it to take a look.

There was a drawing of a person on it, along with some numbers that I couldn't understand.

I was a little confused for a while.

"Remember these numbers and signals, and I'll practice them somewhere later!"

Looking at the incomprehensible symbols, Lu Chen asked with a puzzled expression, "What does this mean?"

"These numbers are used to indicate direction. For example, the center of the forehead is the twelve o'clock position, and rotating it once means taking action after half an incense stick's time. This shoulder is considered the three o'clock position..."

Qin Yu explained it again.

Lu Chen looked around and then pulled Qin Yu into another open space.

Qin Yu didn't mind and gestured for him to take out the mirror.

When sunlight shines on it, it creates reflected light.

"This can be considered as a point of direction, and going up indicates a point of direction, such as the tree or a high place."

"Three shakes indicate someone is injured..."

Qin Yu explained while demonstrating.

"This means the enemy has disappeared..."

"Of course, you need to reintegrate these signals according to your needs!"

"These are just the basic ones we use; they'll need adjustments for your system!"

"For example, moving downwards indicates that there are people below, and shaking it in a circle indicates 10,000 troops, etc."

Qin Yu told him about this framework.

As a general, Lu Chen must know how to make adjustments.

"It can be used for spies and military intelligence; the reflected light can reach a kilometer, or more..."

The furthest distance is determined by the strength of the sunlight on that day.

The stronger the reflected light, the farther it will travel.

As Lu Chen listened, he became increasingly alarmed.

There's actually such a method.

A simple mirror can actually reach this far.

This was something he couldn't have imagined.

This method was actually used by a merchant, and a widow at that.

Impossible, this woman is definitely not simple.

"Are these all transmitting signals according to the points on this map?"

"Yes!"

Qin Yu answered honestly.

This method can be used to command them, directing them to attack wherever they are told.

It is also what they use to transmit signals.

Without the letter, even if the enemy saw it, they wouldn't be able to decipher what it was.

They would only think it was a strange light.

Therefore, this is a good method that can be used now.

"well!"

As Lu Chen listened, he felt increasingly delighted.

"Madam Qin is indeed a capable woman!"

Seeing that he was satisfied, Qin Yu nodded as well.

"Since General Lu is satisfied, may I leave now?"

Qin Yu wrote it down quickly because he wanted to go back as soon as possible.

Now that things were settled, she just wanted to get back as soon as possible.

"this......"

Lu Chen put the blueprints away, but hesitated.

"What do you mean, General Lu? Is there something else you're not satisfied with?"

Qin Yu was very dissatisfied with his attitude.

"This isn't it, it's just..."

Lu Chen looked at Qin Yu with some wariness in his eyes.

Given this woman's abilities, wouldn't she reveal this method to the enemy?

And he didn't even know who those people were.

The fact that they dared to launch a night raid on the military camp suggests that it has something to do with this incident.

It just doesn't feel right to let the person in front of me leave like this!

"This method is excellent, but it's difficult to put into practice. I'm also worried that I might not explain myself properly or that my spies might not understand. So I'd like to ask you to come with us!"

"Are you kidding me?" Qin Yu sneered, crossing his arms as he looked at him.

"General Lu, I have told you everything without reservation. How you use it is your business. It's not good for a commoner like me to know!"

Just kidding, if I were to go to the front lines with them, how long would that trip take?

She still needs to earn money, she still needs to work, and she has such a large family business here.

How could I possibly go to the front lines with him?

"Madam Qin, please don't misunderstand. You only need one or two months, and we will ensure your safety!"

"You taught us this method. Even if we don't tell you, you'll understand. Wouldn't it be faster for you to help us instead of letting us figure it out slowly?"

Lu Chen had no idea what Qin Yu was thinking.

They just knew that they couldn't let her go at this time, or rather, they couldn't let her disappear from their sight.

Fortunately, I had been observing all along.

I know that there is no relationship between Qin Yu and Shen Qianli.

If they had truly listened to Shen Qianli like the soldiers did, they might have simply handed such a talented person over to Shen Qianli.

"Besides, you haven't received your two thousand gold coins yet!"

“The eldest prince of Xinli will be taken to the frontier. At that time, there will be no one to ask for money. We will have no choice but to send him away or deal with him in other ways. Don’t you want this money anymore?”

We don't know how to deal with Shen Qianli yet, but killing him is out of the question!

No matter how it's handled, the money will ultimately go to a victim.

Unless she doesn't want it!

Qin Yu was still tempted when he heard about the two thousand gold pieces.

However, she knew she couldn't go, so she simply refused.

"General Lu, money is important, but life is more important. I've handed over the things as you instructed, and now I'm leaving!"

Qin Yu decided not to say anything more.

More than the money she couldn't get back, she cared about not letting them stay out of her sight.

Moreover, I've been away for three or four days, and I'm afraid my son and the others are going crazy.

Lu Chen was surprised that Qin Yu didn't even want the money.

He hurriedly chased after Qin Yu.

"Madam Qin..."

Lu Chen reached out to grab Qin Yu.

As a result, a hand just landed on Qin Yu's shoulder.

I felt Qin Yu's slender hand grasp the back of my hand.

I felt a wave of dizziness and then fell to the ground.

Unexpectedly, when the other hand reached out to grab, it actually grabbed Qin Yu's clothes.

"tear"

A crisp sound, like a piece of cloth tearing, rang out.

Lu Chen was thrown to the ground with an over-the-shoulder throw.

Before they could even react, it was already too late!

Qin Yu's cloak and the clothes on his shoulders were torn by Lu Chen.

Her fair, delicate shoulders were adorned with a thin, red line.

Lu Chen saw it and immediately covered his eyes.

He didn't even think about being thrown out by Qin Yu earlier, and quickly stood up from the ground.

Her face was flushed red, and she turned to the other side, at a loss.

"I'm sorry... I'm so sorry, Mrs. Qin... I didn't mean to!"

As he spoke, he reached out and picked up the cloak from the ground with one hand.

"I didn't mean to!"

Qin Yu suddenly felt a chill and was speechless when he saw that his clothes were torn.

He reached out and picked up the cloak from the ground, dusted it off, and draped it over his shoulders.

"General Lu, may I leave now?"