The daughter of the emperor is beautiful and holds the power over the world

At the top of the plan was a drawing and a list. Si Yan said softly, "Your Highness, can you get these raw materials as soon as possible?"

Qi Ziyu stared at the drawing in front of him, and saw a large black sphere covered with spikes.

"What is this?" Qi Ziyu was a little surprised. He had never seen this thing before.

But he had seen the ingredients listed above from an alchemist.

In this era, gunpowder had just been discovered by alchemists and had not yet been used in military applications.

"This is a powerful firearm made of fine iron, filled with saltpeter, sulfur, and charcoal in a certain proportion.

"We need a large amount of raw materials. We also need a group of skilled craftsmen to forge firearms, and a group of trustworthy people to make firearms in secret, so that even the State of Yan cannot know about it."

Si Yan has already surveyed the terrain of Beiyan Pass. If he wants to take Beiyan Pass as quickly as possible and at the lowest cost, he has to use black gunpowder.

Qi Ziyu repeatedly looked at the formula in his hand: "How powerful can this firearm be?"

"If there are enough of them, they can destroy a city."

"Miss Si, are you sure?"

Qi Ziyu stared at the drawing with a look of disbelief in his eyes.

"Sure." Si Yan nodded.

Qi Ziyu's eyes sharpened: "The King of Yan doesn't know about this firearm?"

"I don't know." Si Yan said calmly, "These firearms must be made completely in secret by our soldiers. Once the production method is leaked, other countries will be able to imitate it."

"I understand."

Qi Ziyu looked deeply at the woman in front of him, his heart deeply shocked.

The little girl didn't even tell Yan Longyi, which shows how important Daxuan is in her heart.

Although Qi Ziyu had not seen the power of these firearms, he knew that Si Yan was absolutely safe and sound in his actions.

"With these firearms, we won't have to worry about not being able to capture Beiyan Pass."

"No worries." Si Yan smiled faintly, "But our goal is not only to take back Beiyan Pass, but also to eliminate the remaining 100,000 enemy troops in Beiyan Pass. Only in this way can we effectively weaken the military strength of Beimang State and strike at the foundation of Beimang State."

"I really didn't expect that Miss Si is so far-sighted." Qi Ziyu's eyes were full of admiration.

Si Yan's expression was calm. "In this battle, the siege will be fully handled by our Daxuan army. The main task of the Yan army is to ambush the retreating Beimang army."

"Just do whatever Miss Si says." Qi Ziyu said with a smile.

Next, the Yan and Daxuan armies surrounded Beiyan Pass but did not attack.

Liang Junshan and Qin Feng were patrolling the city walls when they saw the armies of both countries conducting their daily drills, and they saw no intention of a quick victory.

"General, the enemy has been slow to attack the city, which shows they are not completely confident. If time passes, the enemy will run out of food and grass and will retreat."

"Don't underestimate the enemy." Liang Junshan looked solemnly at the enemy camp in the distance. "If it were just one country's army, it would be fine. But if Qi Ziyu and Yan Longyi join forces, we must be wary of their conspiracy."

The safest course of action for the Beimang Kingdom now is to hold on to Beiyan Pass and wait for the beginning of next spring.

This winter has been rainy and snowy, and the weather is extremely cold. The Daxuan army and the Yan army will not gain any benefit from wasting time here.

For half a month, Si Yan was busy guiding and supervising the ordnance battalion to manufacture firearms.

Yan Longyi hadn't seen Si Yan for a while since the day he attended Prince Yong's banquet. In the past two days, he specifically asked Yun Li to keep an eye on Si Yan's movements.

"Your Highness, Miss Si has just left the camp and is heading northwest."

As soon as Yun Li got the news, he hurried over to report.

"Ready your horse."

After resting for half a month, although Yan Longyi's leg injury has not yet fully recovered, he can barely ride a horse.

Yan Longyi walked out of the military camp and headed straight to the northwest.

During this period of time, in addition to thinking about the war, he kept thinking about what Qi Ziyu said that day.

There were some questions he wanted to ask the little girl in person.

"Boom——"

Suddenly, there was a sound like thunder, the earth shook, and everyone's horses stopped moving.

"what happened?"

"Did an earthquake occur?" The guards looked puzzled.

Yan Longyi quickened his pace and rushed towards the source of the sound.

Si Yan was testing firearms when he suddenly heard the sound of horse hooves behind him. He looked up and saw Yan Longyi and his group.

Yan Longyi galloped over, his sharp eyes sweeping across the charred dirt around him: "Miss Si, what happened?"

"I was testing the power of firearms, but I didn't expect to disturb the King of Yan."

Si Yan held the last big iron ball in her hand. She lit the fuse and threw the iron ball behind a brick wall in the distance.

"Get down, lie down." As soon as the words fell, Si Yan lay down with his head in his hands.

Yan Longyi was startled and lay down as well, protecting Si Yan's head under his arms.

Yun Li and the others had just fallen to the ground when they heard a loud "bang". The brick wall collapsed in an instant, and smoke and dust billowed.

Everyone was terrified. What was this?

Si Yan calmly pushed Yan Longyi away, and Yan Longyi quickly stood up from the ground.

"Prince Yan, how powerful is this? Can it destroy the wall of Beiyan Pass?"

"It's incredibly powerful. If there are enough of them, they'll definitely be able to blow down the walls of Beiyan Pass."

Yan Longyi was greatly shocked. He didn't expect that such a small iron ball could have such great power.

"Miss Si, what is this?" Yan Longyi looked at the rocks rolling around and showed great interest in the explosive.

"This is a new firearm developed by Daxuan." Si Yan replied softly.

"Do you still have this thing?"

"some."

"Can you give me one?" Yan Longyi asked.

"No." Si Yan smiled and said decisively, "This is a military secret of Daxuan and cannot be leaked."

Although the method of making firearms will be known to people sooner or later, Daxuan will still have a monopoly on it for a few years.

Yan Longyi said with a hint of regret: "I didn't expect that Miss Si is not only intelligent and brave, but also knows how to make firearms."

"I know more than that..." Si Yan said half-jokingly.

Yan Longyi's expression was very serious: "Miss Si is unparalleled in the world and worthy of admiration."

It has only been a short twenty days since they met, but the abilities this girl has displayed have shocked him time and time again.

Yan Longyi looked around and found that Si Yan was the only one here.

She came from such a long distance without even a single guard.

Yan Longyi was silent for a moment. "Miss Si, you came to this desolate mountain area alone. Is Prince Yong relieved?"

Si Yan was so perceptive that he could almost immediately hear the hidden meaning in the man's words.

She slowly adjusted her sleeves before looking at Yan Longyi: "Why is Prince Yong worried?"