We'll have you impersonate the Crown Prince and create a prosperous era for the Great Qian Dyna

Did Zheng Ye'er ever go to the battlefield?

The answer is no.

Putting aside how inconvenient it would be for a woman to be on the battlefield, the fact that her father was Zheng Rong, who was stationed in the northern frontier, meant that it was impossible for her, an only daughter, to go to the battlefield!

The battlefields in her mind all stemmed from her imagination!

From the moment this pile of scrap metal was brought up, Zhou Tiancheng understood that Zheng Ye'er had never fought a war, had never seen how soldiers at the grassroots level fought, and that all of this was just empty talk.

Zhou Tiancheng threw the iron arrow on the ground, his eyes filled with disdain.

"Miss Zheng, you say these things can save the soldiers' lives, but have you thought about it?"

"Take this arrow, for example. How much heavier is it than a standard-issue arrow? That means how big of a bow and how much strength would be needed to shoot it and cause damage?"

"Is this something ordinary soldiers could do?"

As soon as he finished speaking, he kicked the iron bow aside with his toe.

"Similarly, a bow made of wood is not only cheaper to make than an iron bow, but the materials and processes are also much faster."

"Leaving aside other matters, Young Master Zhou, you are the son of the Minister of Works. How long do you think it would take an ordinary craftsman to forge such an iron bow and arrow?"

"By the time you've completed the required number of production lines mandated by the imperial court, the enemy from the northern frontier will probably have already reached the capital!"

Having said all that, Zhou Tiancheng no longer bothered to comment.

This is entirely a figment of the imagination of two young masters and ladies who have no idea about the suffering of soldiers at the grassroots level.

Zheng Ye'er was somewhat dissatisfied.

"Without these bows and arrows, how can we penetrate the enemy soldiers' armor? These are specifically designed to break through heavy armor! Why not?"

Zhou Tiancheng simply waved.

"Present the writing brush, ink, paper, and inkstone. Also, send me a set of etiquette."

The so-called rules are rulers and compasses, which are used for drawing.

His dismissive attitude not only angered Zheng Ye'er, but also Zhou An. Zhou An picked up the bow and arrow and looked at Zhou Tiancheng indignantly.

"You don't know anything!"

"I made this exactly according to the instructions in the ancient books!"

"Ancient generals could draw iron bows with a draw weight of several stones, shooting arrows made of refined iron. How could ordinary wood withstand such force? How could it penetrate armor?"

"And those soldiers you mentioned, if they can't kill anyone, that's their own problem. What does their lack of proper training have to do with my bow and arrows?"

Zhou Tiancheng laughed in anger.

This is yet another "Why not eat meat porridge?"

How much does an ordinary soldier in the Great Qian Dynasty earn in a month?

How many meals of meat can they afford?

Practicing martial arts and honing your strength both require investment!

Moreover, iron bows and arrows are expensive to make and have mediocre effects. The reason they haven't been passed down is because they are simply unsuitable!

But Zhou Tiancheng had no intention of engaging in a war of words with Zhou An.

When the brush, ink, paper, and inkstone were delivered, he lowered his head and began to draw.

Zheng Ye'er actually believed it to some extent, but she couldn't let go of her pride at the moment, and she was still angry with Zhou Tiancheng, so she couldn't help but snort coldly.

"I'd like to see what you can come up with!"

"And don't think you can fool me with a few words of nonsense! My yard is full of veterans from the northern frontier; they can tell at a glance whether someone is good or not!"

Zhou Tiancheng didn't waste any words with them. With swift strokes of his pen, he drew out the various improved instruments he remembered, such as the composite bow and the armor-piercing cone.

Zheng Ye'er couldn't see it, but when Steward Liu took one look, he immediately gasped!

What kind of painting technique is this?

It actually allowed him to see the specific items directly!

The entire bow seemed to appear in front of him in three dimensions.

Various dimensions and functions are also marked on each key part.

If this painting were to get out, it would likely cause a great upheaval in the entire artisan industry!

Bing'er, the maid who was responsible for serving tea and water, couldn't help but take a look, and then her eyes widened.

"I'll go and fetch the Duke!"

Upon hearing this, Zhou An was taken aback, and a bad premonition flashed through his mind.

Could the prince really have drawn something extraordinary?

Zheng Ye'er also looked over with curiosity, but out of consideration for her image, she didn't move closer. However, her gaze was completely undisguised, as if she wanted to see a hole through the table.

Bing'er was a female bodyguard personally trained by her father. In her father's words, if Bing'er were not a girl, she could serve as a commander in the army!

Even Bing'er was so shocked. What exactly did the Crown Prince draw?

Before Zheng Ye'er could shamelessly approach him, Zheng Rong had already reappeared in the main hall.

He slowly walked behind Zhou Tiancheng, looked down at the painting on the paper, and frowned so deeply that he could trap a fly.

Zheng Ye'er hadn't seen Zheng Rong with this expression in a long time.

In the past, when Zheng Rong showed this expression in the northern frontier, it meant that a major battle was about to begin.

At this moment, Zheng Ye'er became even more alarmed.

What exactly did the Crown Prince draw that made his father feel like he was facing a major battle?

With the final stroke completed, Zhou Tiancheng slowly put down his brush.

"Miss Zheng, didn't you say you had many veteran soldiers in your household?"

"In that case, you can invite the veterans in to judge. Let them tell you whether this pile of stuff on the ground is just junk!"

Zheng Ye'er has finally made it through.

But she couldn't understand it!

Why put a wheel on a perfectly good bow and arrow?

The shape of this arrow is quite strange; I wonder what it's for.

And what's the point of making things so complicated with catapults and siege ladders?

She may not know the value of things, but she has people around her who do.

Zheng Rong reached out and picked up Zhou Tiancheng's painting with both hands, her expression as solemn as if she were about to go to war.

"There's no need for anyone else; I, the Duke, can judge!"

"However, Your Highness, there are some things I still don't understand, and I hope Your Highness can enlighten me."

Zheng Ye'er's pupils dilated, and her eyes widened.

Who is her father?

The Duke of Daqian, the ever-victorious general of the northern frontier, who has subdued countless foreign tribes.

Having experienced thousands of wars, what kind of equipment hasn't he used?

But now, he actually says he needs the Crown Prince to enlighten him?

Is the Crown Prince's painting really that good?

She stood there dumbfounded, like a child who had just stood there, not knowing what to do when an elder came to visit.

In contrast, Zhou Tiancheng was confident and began to explain to Zheng Rong, pointing to the paper.

"Actually, the principle here is very simple. You might as well think about it. If we want to lift a very large stone, we can use a long stick to lift it. The longer the stick, the less force we need."

"Putting it on this bow, it's actually quite strenuous to draw it, but if the bow is fully drawn, we can save effort."

"The smaller wheel bears less force, while the larger wheel bears more force, which reduces the pulling force we need. Only a few kilograms of force are needed to maintain the fully drawn bow..."

Zheng Rong's hands were trembling.

Especially when Zhou Tiancheng said that a bow with a weight of one stone only requires a pulling force of a dozen kilograms to maintain its full draw, Zheng Rong was excited just thinking about what that meant.

This means that soldiers can maintain a fully drawn bow with less effort to aim at the enemy.

This means that once this bow and arrow are invented, the accuracy and endurance of archers in the Great Qian Dynasty will be improved by at least ten times!

"This is a vital national asset!"

Zheng Rong said seven words.

These seven words left Zheng Ye'er speechless with astonishment.

The good-for-nothing prince only drew a picture, yet she received such a comment from her father, whom she considered omnipotent?

Could it be that the Crown Prince is the truly talented one?