On the southern wall of Chang'an City, the Tartar soldiers stared nervously outside the city, their eyes scanning back and forth outside the city.

That terrible enemy will attack Chang'an today, and the defending force on the city walls at this time is several times greater than usual.

Chang'an City in this era did not have a moat, Chang'an's moat was built more than a hundred years later in the Hongwu period of the Ming Dynasty, without the moat and suspension bridge of the line of defense, the enemy can go straight to the city gate, hit the city gate.

The Tartars could not see the scene a kilometer away with their naked eyes, and the sudden rise of a row of watchtowers that were obviously higher than the canopy of the trees made the Tartars suspicious, but they couldn't imagine what it was or what it was for.

After all, they really couldn't imagine anything that could attack the city wall two miles away, and then they were taught to be human.

"Smack...... Syllable...... Smack......"

The Tartars on the city wall were startled, and they found that the bed crossbow next to them suddenly exploded inexplicably.

"Bang...... Bang...... Bang......"

After a breath, they heard a continuous muffled sound coming from afar, but looking in the direction from which the sound came, they could not see anything clearly, and they did not understand the means by which the other party had attacked.

"What's going on? How could this bed crossbow suddenly burst? ”

"Oh no, the bow arm of the bed crossbow is broken."

"Hurry up and report to the marshal, the enemy has begun to attack."

Although they did not understand the enemy's attack, they understood very well that the enemy was the first to destroy the heavy equipment defending the city, and wasn't it just to prepare for the next siege.

"Don't mess around, hold your positions, the enemy will soon start attacking the city, get your bows and arrows ready......"

"Smack...... Ah......h

A commander was drinking to stop the chaotic soldiers, and a bed crossbow next to him suddenly exploded, and he felt a pain in his face, and then he went numb.

But it was the burst that hit the target, and a small piece of shrapnel pierced his cheek after the explosion, and he was not the only one who suffered from this, and a few other unlucky guys were also hit, the most unlucky one was a guy with shrapnel in the eye.

Now the Tartars didn't dare to approach the bed crossbow, so they either hid far away, or crouched down and hid under the female wall.

There are more than 200 bed crossbows on the southern city wall, but they are being damaged at a very fast speed, Yin Zhiping sniper, and the first round needs to accurately calculate the trajectory, after the first target is successful, the later target will be much faster.

Because in just a few seconds, the wind speed will not change much, and the target distance will not change much, as long as the value displayed in the sniper scope does not change much, the back is completely aimed and hit.

When most of the bed crossbow was destroyed, Yang Yi flew to an altitude of about 2,000 meters, raised the walkie-talkie and pressed the button, and ordered: "Yuxuan, order the artillery to open fire, let the artillery test fire one shot first." ”

"Understood."

In an open space more than ten zhang away from the lookout, Liu Yuxuan gave an order to the artillerymen according to the coordinate data obtained from Yang Yifei before.

"All attention, target, Tartar return artillery position, ruler zero three, base firing direction, northeast 1300, direction, 24-35, one cannon and one shot, ready to ......"

Following Liu Yuxuan's command, the gunners began to twist the mortar direction machine wheel, adjusting the direction of the mortar muzzle and the high and low elevation angles.

The gunner of the leftmost of the four guns took a shell and put it into the muzzle to prepare, and said loudly: "One shot is good." ”

Liu Yuxuan pressed the walkie-talkie button and said, "Report to the commander, the first cannon is ready to be fired." ”

Hearing this, Yang Yifei raised the binoculars, looked at the southern city wall and returned to the direction of the artillery position, pressed the walkie-talkie button with the other hand, and said, "Put." ”

Although he couldn't look directly at the location, he knew where it was, and he only needed to look at the fire and smoke to get a rough idea of where the shells would fall.

The gunner let go of his grip on the shell, covered his ears and turned his head away.

"Tom...... Shout...... Boom ......"

Yang Yifei clearly saw the position where the fire was rising, and immediately pressed the walkie-talkie and said: "All attention, direction correction, 002 to the right, 1 reduction in the upper and lower orders, 12 rapid fire shots for the whole team, ready to ......"

The gunner listened to the voice coming from the walkie-talkie, and quickly adjusted Zhu Yuan according to the data reported by Yang Yifei.

"A good shot...... The second cannon is good...... Three guns are good...... Four guns are good. ”

"Put."

"......Tom tom Shout...... Boom Boom Boom Boom ......"

The first shot is just a test of ballistics, and it doesn't have to hit the target, of course, the first hit is naturally best, so the first round usually only has one cannon fired.

When the shells hit the ground, the artillery commander had a good idea of the ballistics, and after correcting the bearing, he could open fire with all his might.

……

But it was said that in Chang'an City, when the artillery began to bombard, the Tartars were completely confused, and they didn't know what was going on at all.

The first shot missed the return artillery group and deviated a little, but it killed a group of Tartars passing by, and the other Tartars around looked up at the sky in unison, their mouths wide open.

"What's going on? What's going on here? A centurion rushed over to the soldier who had seen the scene and asked.

A soldier was stunned and said, "Just ...... A thunderbolt fell from the sky just now, and it killed them. ”

"Huh?" The centurion's face was stunned when he heard this, but when he looked at the small pit on the ground, and the corpse of the soldier who was torn apart, charred and smoking, he instantly believed it again.

"Tom Tom Tom"

At this moment, several muffled sounds came, just like the thunder in the sky.

"Whew......"

"What's that sound?" A series of shells screeched, and the Tartars listened intently to hear what it was, and the next moment they saw a scene they would never forget.

"Boom Boom Boom"

I saw that the place where they had placed hundreds of return guns, large and small, inexplicably burst into flames, and a violent explosion occurred.

"Whew......"

"Boom Boom Boom"

Explosions kept happening, and some of the return guns fell apart directly in the explosion, and some were ignited by the constantly rising fires.

"Ah...... Tengri (the god of the Tartars, translated as Immortal Heaven) is angry......"

The surrounding Tartar soldiers were suddenly in confusion and moved away from the return artillery position.

When Daisun received the report and rushed to the southern city wall with thousands of troops, the return cannon and bed crossbow they had arranged here had been completely destroyed.

Dai Sun looked at the Hui artillery position, which had fallen into a sea of fire, and his face was gloomy like water.

It was not a Tengger rage, but a premeditated attack, and he had heard from the soldiers who had fled from Tongguan that they were being chased by a strange thing that could fly while they were there.

The thing could make a thunderous explosion, and the soldiers would fall to their deaths with blood on their bodies.

Su Butai and Wanyan Chen Monk were both engulfed by the explosion and fire that fell from the sky, and there were no bones left, and Daisun was suddenly very insecure now.

Since both Subutai and Wanyan Chen Monk will be destroyed by the attack from the sky, what about himself?

Thinking of this, he shuddered and subconsciously looked up at the sky, naturally he couldn't see anything.

But I have to say that his intuition was very accurate, because when he arrived with the army, the densely packed army made Yang Yifei above the clouds show a demonic smile.

They were standing in a wide open space behind the south gate, and there were no dwellings around, and since they were lined up and waiting to be bombed, it would be too unpleasant if they were not perfected.