As soon as she heard Shen Feng say this, the cloud immediately nodded: "That gunpowder is certainly a good thing, if we use it well, of course, we can achieve unexpected results."But how to use it cleverly, and ask the king to point out more!”

Although this gunpowder was originally poured out by the cloud itself, it was used to deal with the armor giant in the Tubo Army, but the formula was not too accurate, the composition was mixed, and the power was limited.

Later, under the guidance of Shen Feng, the cloud used sulfur charcoal and nitrite to accurately match, which created the kind of black gunpowder in the future, which greatly increased the power.

Although the cloud itself has been applied, but compared with Shen Feng, a person who has crossed over, the insight is still too limited, and many unexpected inventions and creations are only available under Shen Feng's guidance, so he asked at this time.Shen Feng thought for a moment and then said, "The kind of arson rocket we made last time, whether it was during the rescue of the Shenwu Army, or the destruction of the ten stone-throwing cars outside this martial arts prison, it played a big role."Now we only

It brought two hundred barrels of gunpowder, which had to be used.Let’s take the attention of these rockets.”

"Oh?"What do you think, and how can these rockets be improved?”The cloud’s eyes glittered, and he looked excitedly at Shen Feng and asked.

For the cloud, Shen Feng is his benefactor, a teacher and friend, and the person he admires the most, the best inspiration and guide.

Shen Feng smiled and said, “How many tools and objects have you brought with you this army prison with you this camp of 5,000 craftsmen?”The cloud immediately nodded and replied excitedly: "All are directly brought by loading, all the utensils are complete, I would like to move the whole workshop of the Ministry of Industry!"Outside the prison, we also built a few large tents as a presence.

The use of the workshop.If the prince wants to do something out, we are also very fast on our side!"

Shen Feng was happy in his heart and said to the cloud: "Go, let's go to your temporary workshop and talk!"

...

At dawn on the second day, the defenders on the wall of the Wushuguan found that they had piled up more than a dozen mounds of earthen hills before the rebel army array for thousands of years opposite.

These mounds did not appear to have been piled up overnight before sunset last night.

The dozens of mounds piled up before the army array are piled up from the earth and stone cleared by the excavation tunnels, and the local materials are taken, which makes the operation of the excavation tunnels seem to be flawless.

And on top of these mounds, each stands a stone-throwing car, enough to have a dozen!

The defenders on the wall immediately passed on the generals, and Shen Feng and Cen Seng and others soon came to the wall.

Looking at this change in the army, Shen Feng certainly understood what the other side really meant.The stone-throwing car will be placed on these mounds, increasing the height, and it can increase the range of these stone-throwing vehicles!

"It seems that they are going to start attacking, and prepare the defenders in the gate!"He immediately said to the twilight.

Censeng immediately communicated the order, whether on the wall of the military prison or within the city, the soldiers were prepared and covered to deal with the next fire or stone bomb attack.

After the attack on the last stone-throwing car, the guard in Guan's army has more experience, and the bunker and protection have been rebuilt in the urn city, and the soldiers do not need to worry too much.

Not long after, a group of soldiers appeared on the mounds, and a basket of stone bombs was also transported, mounted on the tossing of stone-throwing cars.

Unexpectedly, not long after, these dozen stone-throwing cars began to launch one by one!However, this time the thousand-year-old generals set up from the prison is still too far away, even if these more than a dozen stone-throwing cars stand on the mound, increase the range, but the stone bombs they fired are only able to hit the wall of the prison, there are extreme.

A small part can fall over the city wall to the urn city, and the vast majority fall before the wall of the military prison.

And such an attack, the damage to the military prison is almost minimal!

This makes Shen Feng a little do not understand, thinking that they were once bitten by snakes for ten years afraid of the well rope, worried that they are still using those rockets to attack these stone-throwing cars, so they will be set so far away?

The stone-throwing car attack has been continuous, countless stone bombs continue to hit the wall of the martial arts prison, falling in front of the martial arts gate, although it did not bring too much damage, but the sound is very large.

Seeing the sky gradually darkened, the other side's attack did not stop at all.Looking at such a scene, Shen Feng thought of something, his heart immediately tightened, and rushed to the bottom of the wall with Cen.

At this time, under the wall, there were also more than a dozen soldiers guarding those buried on the ground and listening to the underground movements at all times.Looking at Shen Feng and Cen Seng coming, these soldiers stood up and watched the two men shake their heads: "Lord, the army, the enemy's stone bomb constantly bombards the wall and the ground before the gate, the sound is very loud, we have a dozen of us.

The urn can’t hear anything except to be able to detect these sounds!”Shen Feng immediately went to one of the big urn before, only to see a layer of extremely thin raw cowhide, tung very tight, like a big drum, and it is the use of such a big urn above the skin, can explore the ground very fine.

The sound of the micro, but the opposite of the dozens of stone-throwing machines so fierce bombardment, the sound of the sound is very great, Shen Feng listened to, can only hear the sound of the gull, all of which are the huge sound brought about by the stone bomb attack!

He stood up and looked very heavy.

Cen Seng's heart naturally thought of what, looking at Shen Feng and said: "Lord, what are they trying to hide?"Shen Feng immediately said: "How many such stone bomb attacks can fall into our military prison?"How much can we hurt our walls?This is not uninterrupted from morning to night, is to cover!It seems that they are digging in the dark, and this

At that time, I think it is very close to the closed wall of our military prison!"

“This...”

Cen Shen felt that what Shen Feng said was very reasonable, and his heart just had the same thought.

Before the cloud has found that there is a lack of water in the underground cistern of this Wujun, and if the other party really excavated the successful tunnels into the urn city, the defense measures that can be taken on their side are limited.

In addition to this underground tunnels, there are more than a dozen stone-throwing vehicles in addition to this martial arts gate, and tens of thousands of troops, once the full-scale attack, the military prison is another bitter battle!“Lord, what are we going to do next?”He immediately looked at the twilight and asked.