Tao Benyue led the way to the Wei River, but saw a row of ten simple wooden chariots parked on the edge of the Wei River.

The chariot looked like a stout cross, and at first glance it was incomprehensible to what it was for, but after Yuwen Shihong approached, he saw at a glance that the bottom of the rear of the chariot was actually installed with a large spring made of rough cast iron?

Each one is thicker than your own thighs!

Seeing the spring, Yuwen Shihong's face was immediately full of excitement!

"Clever! I didn't think of that! ”

The principle of spring ejection is understood by elementary school students!

With the ejection force of ten springs, ejection kilometers should not be a problem!

"Your Majesty, I don't really understand how to use this thing, you wait a minute, go to the Guozijian and ask Master Zu to come over."

Tao Benyue bowed down and trotted away.

Now Yuwen Shihong is even more excited, it is really Zu Wenyuan's masterpiece!

Ordinary people, who would have thought of using springs to make catapult cars?

About a quarter of an hour later, Zu Wenyuan came in a hurry, still holding a thick pile of bamboo paper in his hand.

Yang Shuang was stunned from the moment he saw the chariot to the present, because he couldn't understand what the chariot was for.

The shape was very similar to the catapult commonly used in siege towers, but he also knew that it was definitely not as simple as a catapult.

"Meet Your Majesty," Zu Wenyuan hurriedly saluted, then lowered his head to look at the bamboo paper he brought, and quickly explained the general principle to Yuwen Shihong:

"After careful calculation, the weight of the lead ball is 20 catties, and if you want to be projectile to five miles away, you need a bearing, bearing, wheel and other bearing levers, which can bear a weight of about 100,000 catties, and then consider the projectile angle, distance, etc."

"And the axle and bearing that can bear about 100,000 catties of weight should also reach at least 10,000 catties, so that the chariot itself will be very cumbersome, and it will take at least 50 people to move."

"After considering this, Chen designed and built these ten hundred zhang cars, the maximum distance of ejection can reach 150 zhang (500 meters), and the projectile can reach 100 zhang (333 meters)."

"In addition to effective projectile and ejection, plus wooden wheels, only ten people can control and move the catapult car."

Zu Wenyuan babbled on a lot of math problems that others couldn't understand, and Yuwen Shihong also converted units in his mind while listening, and he was dizzy after a while.

"The most important thing is this."

Zu Wenyuan's words finally came to the most critical spring:

"Although Lord Tao is not very willing to cooperate, he still cooperates to build a hundred spiral irons."

"With the help of the principle of shrinkage and release of the spiral coil iron, the projectile device is pulled down by human tension, and the hand is released together after aiming at the target."

"The shrinking spiral coil iron can release a huge catapult force in an instant."

"Your Majesty can try."

Yang Shuang followed Yuwen Shihong's side, listening dizzily, it was finally time for the actual test, and he had already waited and seen.

Tao Benyue was Zu Wenyuan, who had no emotional intelligence, and mixed a few sentences of sue in his words, and his heart was full of unhappiness.

But now that the thing has been made, he has nothing to say, if it weren't for the sake of face, he would have apologized to Zu Wenyuan a long time ago.

However, not only did he not apologize, but he didn't even have the intention of arguing with Zu Wenyuan on his own merits, because he knew that he was not reasonable.

It's better not to talk and take more hands.

Tao Benyue personally moved a mountain rock weighing about 20 catties, and ten laborers, under the command of Zu Wenyuan, each rotated the rope coil on the chariot, which was visible to the naked eye to rotate very laboriously.

However, the springs are also stretched little by little, the ropes are becoming more and more tight, and the springs on both sides and in the middle of the bearings are also stretched.

"Put!"

But listening to Zu Wenyuan's order, ten laborers brushed and let go.

The mountain rock placed in the catapult basket shot rapidly into the sky on the other side of the Wei River with a teleportation speed that was almost invisible to the naked eye!

I saw that the mountain rocks that were ejected were still flying towards the sky in the distance, because they were flying farther and farther!

After a while, it flew out of people's field of vision! It almost became a small invisible black dot.

But this small black dot is still flying forward vigorously, and there is no tendency to fall in the slightest.

"Wow!" Yang Shuang was amazed and exclaimed on the spot!

"Artifact! Definitely an artifact! ”

In order to make Yang Shuang full of confidence in the second expedition to Mobei, Yuwen Shihong immediately ordered!

Experiment with a real egg!

Tao Benyue hurriedly pushed a catapult cart into an even more open area, lest the solder balls filled with black water accidentally cause a fire!

In the second test, the solder balls that flew out were still the same as the first test, and they disappeared in the blink of an eye!

But in the blink of an eye, a large area of fire exploded in the distance!

The group hurried over!

But I saw the black water splashing in the wilderness bursting into a raging fire!

Yuwen Shihong asked Yang Shuang to go over to extinguish the fire in person, so that he could feel how difficult it was to extinguish the fire of the burning bomb.

Yang Shuang casually picked up the shovel brought by the laborer and tried to bury it with soil to extinguish the fire.

The moment the plastic shovel touched the flames, even the shovel was ignited!

It wasn't until about a quarter of an hour later that the flames began to weaken!

I saw that at least three zhang (10 meters) in a radius were burned and turned into scorched earth!

The confidence that the artifact brought to Yang Shuang was almost about to break through the chest and break through the sky, with this artifact, the Turkic barbarians who were accustomed to living together!

There must be no escape!

Even the more you try to extinguish the fire! On the contrary, the more you burn yourself!

Amazing!

"Your Majesty Shenwu!"

Yang Shuang, who was excited and wanted to lead his troops immediately, heard Zu Wenyuan say inexplicably:

"General Yang, this official has something to talk to His Majesty alone, please recuse yourself."

Yang Shuang let out an stunned "oh", and then retreated into the distance.

Yuwen Shihong couldn't cry or laugh:

"Master Zu, I know you have a genius, but your EQ is not too low?"

Zu Wenyuan didn't hide it, and said calmly:

"God is fair, not only gave me a smart brain, but also took back my human sophistication, no way."

"Isn't it enough to have Your Majesty's reuse and appreciation?"

When Yuwen Shihong heard this, he felt speechless:

"Is it because Yang Jian rebelled?"

Zu Wenyuan said "um":

"Although the principle of this catapult car is complex, as long as you figure out the principle, it can be imitated, which is completely different from the firecracker."

"The principle of the fire gun is much more complicated than that of the catapult car, and the mystery in the projectile and the gun tube cannot be figured out by pondering."

"I'm just worried that Yang Shuang also has two hearts, if His Majesty allocates the catapult car to Yang Shuang to use, in case he turns against him, it will be a great disaster for the Central Plains, which I have been farming for generations."

"Please also ask Your Majesty to think carefully before making a decision."

Zu Wenyuan's words are very reasonable, and it is rare that his mind is not calculated once.

Before he could respond to Zu Wenyuan, Zu Wenyuan left without even saluting.

Yuwen Shihong couldn't cry or laugh:

"What is Master Zu doing?"

"I made spiral iron, I originally wanted to make equipment for the convenience of the people, so naturally I continued to ponder the equipment."