As soon as he stepped into the house, Nangong Jingzhi saw an exquisite small crossbow and a black plate on the table.

Nangong Jingzhi looked at the two objects on the table and picked up the crossbow first, "This is the crossbow that can shoot ten times in a row."

He looked at that thing as if he were looking at a stunning beauty, it was extremely rare.

He tilted his head and asked, "Have you ever experimented with this?"

"I was just preparing for the experiment, and here you are." Su Yin walked forward with a smile.

Nangong Jingzhi said nothing, took his beloved crossbow, left the wooden house, and went to an open place to experiment.

Once he got the crossbow in his hand, Nangong Jingzhi knew how to operate it without even asking Su Yin.

“Swoosh, whoosh, whoosh”…

One after another, sharp arrows flew out.

When the last arrow was shot, there was no lag throughout the entire process, it was very smooth and continuous, and the range was about 180 feet.

The crossbows currently used on the battlefield need to be replaced and cannot be fired continuously. If this one is used instead, it will definitely be a weapon of mass destruction on the battlefield and can reduce the death rate of our soldiers.

"Good! This is really good." Nangong Jingzhi looked at Su Yin, "Su Yin, you are really a genius."

"This is not my invention. The inventor was a great military strategist named Zhuge Kongming. I just made some minor modifications to his crossbow, so I don't dare to take credit for it."

"Could you introduce Mr. Zhuge to me?"

"I'm afraid not. He's gone. He's dead."

Nangong Jingzhi was filled with regret, "God is really jealous of talented people."

After a little regret, Nangong Jingzhi immediately became excited again, "Su Yin, try another weapon quickly."

"This weapon is not appropriate here. We need to go somewhere farther away."

Although this place is three miles away from Qingxi Mountain, the sound of the explosion will definitely be heard to some extent. In order to avoid unnecessary panic, it is better for them to conduct the experiment at a farther place.

"Walk."

Nangong Jingzhi wanted to take the gunpowder ball, but Su Yin quickly stopped him, "Wait a minute, I'll do it for you."

"Why?"

Su Yin kept it a secret, "You'll know later."

The group walked towards Hulu Valley. Nangong Jingzhi looked at the environment of Hulu Valley and was very surprised. "It's much warmer here than outside. There are hot springs here, which is really nice. If we build a few houses here and clean it up, it will be a good place. The only drawback is that it's very windy here."

"It's normal that the wind is strong in the canyon." Su Yin said with a smile.

The group took the thing out and conducted the experiment directly at the place that Su Yin had chosen before. The original intention here was to remove some rocks that were blocking the passage, so it was just right to use gunpowder balls to blow them up, thus saving a lot of manpower.

"Stand further away."

Nangong Jingzhi and his companions walked about thirty feet away. Su Yin turned around and waved her hand, "Not enough. Keep retreating."

This time they retreated to more than sixty feet away.

"To be on the safe side, you guys should move further away." Su Yin said again.

Nangong Jingzhi was surprised, "This far is not enough?"

"Maybe you will get hurt." Su Yin said bluntly.

Nangong Jingzhi became more and more curious about this weapon. Not only was he curious, but even Nanwu, Nanliu and the others were extremely curious as well.

When they were far enough away, Su Yin stood twenty steps away, lit the fuse, and then ran away.

When Nangong Jingzhi and the others saw Su Yin running away, they subconsciously wanted to turn around and leave. However, when they turned around, they realized that they were standing far enough away and stood still calmly.

When Su Yin ran to Nangong Jingzhi's side, she heard a loud "boom" and the rocks exploded, splashing countless small pieces of gravel.

Nangong Jingzhi and others stared in disbelief.

"This thing is so powerful." Nan Wu was surprised.

"A small black ball can actually blow up rocks easily. If this thing explodes around a person, it would probably blow the person into a bloody mess." Nan Liu marveled.

Nan Qi smacked his lips, "No wonder Miss Su asked us to run farther away."

Nan Ba ​​crossed his arms across his chest, but his eyes were fixed on the remaining gunpowder balls, with an eager look in his eyes.

"Miss Su, can you let me try something else?"

Nan Ba ​​took the initiative, and when the others heard what he said, they glared at this guy fiercely and then expressed their desire to try.

Su Yin smiled and said, "Distribute the rest among yourselves. Remember to pay attention to safety. After lighting the fire, be sure to leave immediately."

"rest assured."

Nanba was happy to be the second tester.

Several others also picked up the gunpowder balls, and even Nangong Jingzhi was no exception and tried it himself with great interest.

After all five of them finished the experiment, everyone had a look of unsatisfied satisfaction on their face.

“Once these two magical weapons are placed on the battlefield, they will definitely be powerful lethal weapons.” Nangong Jingzhi said excitedly.

Su Yin said, "I asked you to come here this time because I want to cooperate with you. I will provide the drawings, and you will be responsible for forging and production."

Nangong Jingzhi agreed without thinking, "No problem."

"The gunpowder ball you just saw actually has a wide range of uses. What you saw was only when it was at its weakest power. Its power can be infinitely amplified, and even placed in different places, it will have different effects."

Nangong Jingzhi's eyes were filled with deep thought, and suddenly his eyes were slightly stunned, "If this thing is combined with a crossbow, the power it exerts will be even greater than it is now."

Damn it!

Su Yin was shocked. She just said it casually, and Nangong Jingzhi thought of the right direction. He was worthy of being a family of weapons.

However, the current forging technology may not be able to do it, but she believes that if she continues to research, it will definitely be possible.

Whether you have a sword in your hand or not has nothing to do with whether you use the sword or not. Having a sword in your hand is very crucial.

After Nangong Jingzhi came up with an idea, he became excited.

"Su Yin, you are such a genius."

Su Yin couldn't help but hold her forehead, "My Young Master Nangong, what you need to do now is to quickly build the weapons workshop so that you can start work as soon as possible. First, put these two things into the northwest battlefield and help the northwest army drive away the Darong Kingdom."

As for whether she was afraid of the news spreading, Su Yin was naturally not afraid. If she didn't spread it, how could she deter the surrounding dynasties that were ready to make a move?

Since deciding to seize power, Su Yin began to learn about the dynasties surrounding the Dayong Dynasty, their relations with the Dayong Dynasty, wars, and other situations in recent years.

It can be seen that all countries are waiting for an opportunity, and this opportunity may be the four kings fighting for imperial power.

As the four kings fight for power, internal friction is inevitable, and the country's strength will decline rapidly as a result of their infighting.

This is the opportunity for all countries.

What Su Yin needs to do now is to make the surrounding countries wary and prevent them from acting rashly.

With Duke Su in charge of the northwest army, Su Yin doesn't have to worry at all. However, the situation is different in the north, southwest, and south.

Su Yin and his father had already discussed countermeasures for these situations, and the most important of these countermeasures were these two lethal weapons.

This is one of the reasons why she asked Nangong Jingzhi to come over.