The reverence for heaven, earth, ghosts and gods seems to know no race or national boundaries. Whether it is the East or the West, in those ancient origin legends, there are the shadows of thunder and gods.

As human beings, we have an innate fear of anything unknown. This feeling has nothing to do with courage and bravery, it is nature, and it is a force that is difficult to change.

Even the Persian warriors, who were not afraid of death, were no exception. Although they can kill and kill for the sake of the king of Persia, they are invincible. But in the face of a mysterious force that has never been seen before, the timidity that suddenly appears is no different from that of ordinary people.

At this moment, in the vast battlefield above and below the city, thousands of soldiers raised their heads and looked at the six behemoths that appeared in the sky in a daze. No one knows what will happen next.

The sky was slightly dark, and the wind and sand stopped. The tens of thousands of Persian cavalry on the battlefield who were ready to charge, with a restless mood, watched these strange things rising from the other side of the city slowly drift towards their heads.

Although I don't know what happened, out of an instinctive premonition of danger, the Persian generals in the middle of it still changed their faces. Their eyes widened, observing the paranormal phenomena as far as their eyes could see, and they wanted to figure out very much whether these things that fell from the sky were here to help them, or to help the Han army?

Influenced by the Persian royal court, all Persians were convinced that their Persian king was a man of providence. This great king, born with a huge aura, has subdued the entire western continent that has been torn apart in just a few years. His will, no one can resist. If God really wants to choose the master of the world and rule over this vicissitudes of life, who else but him?

In the midst of countless complex emotions, those few things that looked like super-large mushrooms quickly floated above the entire Persian military array. And then...... The Persians knew right away what awaited them!

It seems like a long time, but in fact, it is just a short moment. When a few stunned Persian dead soldiers at the head of the city were hacked to death by the Han army, the fierce fighting immediately began again. The life-and-death struggle made them no longer care about everything behind them. Only by killing all the Han troops defending the city can they have a chance to rest again.

And if your eyesight is good enough, you can actually see roughly what those things are flying up in mid-air. Their structure is very simple, and if you look at it from the perspective of a distant civilization, it is nothing more than a large bamboo basket with an umbrella on it. To say that they are hot air balloons seems a little ridiculous.

However, in the era of the Han Empire, where cold weapons were king, Yuan Zhao racked his brains to finally gather materials, and it took several years of power consumption and countless financial resources to drum up these six large giant umbrellas, which could already be used for a short manned flight. And this is the first time that they have been applied to the battlefield.

If it weren't for the fact that he wanted to defeat the Persian invasion in the shortest possible time, so as to greatly reduce the casualties of the Han soldiers, Yuan Zhao would not have taken the risk of experimenting with these things when the technical conditions were not yet mature.

If he is given a few more years, with the current national strength and development level of the Han Dynasty, he believes that with the wisdom of those young talents, under his own guidance, it is completely possible to make a hot air balloon that can truly achieve long-distance flight.

But now he has no choice. Once the Persian army began to attack Yumen Pass, there would be a large number of casualties on the brutal battlefield at every moment. The population of the Han Dynasty is still not large, and he is reluctant to die every innocent person. I can't bear to see the sad eyes of the families of the soldiers who died after the war.

Perhaps, these simple things that can only make short flights at low altitudes under good conditions will play a major role in determining victory or defeat if they suddenly appear on the battlefield! This is the deep expectation in Yuan Zhao's eyes, and it is also the belief in the hearts of all the soldiers of the Flying Dragon Army who participated in this operation.

Looking down at the ground under your feet from a height of dozens of meters, it really looks particularly majestic and magnificent. The wind in my ears was whistling, and the blood was boiling. A young lieutenant named Liu Xu led his squad and finally began flying operations in the real sense.

As a child of the clan, Liu Xu never imagined that one day he would fly into the sky as in myths and legends and become one of the first warriors to create a historical moment.

Although in the years to come, Liu Xu has soared into the sky again countless times, and the flying equipment in his hands has become more and more advanced. But only the experience of the first flight outside the Yumen Pass made him unforgettable and unforgettable.

"You may die or you may survive...... I can't guarantee it. It would have been a gamble of life...... Good luck to you all! ”

This young man, who had royal blood in his veins, didn't know why Yuan Zhao had entrusted him with this task at that time. But he will always remember the infinite compassion and heaviness in the eyes of the idols he worshipped as they were leaving.

I took a deep breath, and even from this high place, I could smell the thick blood on the battlefield. Liu Xu, who put away the emotions in his heart, touched the bronze medal on his chest again and clenched his fists.

There are a total of 18 people in the flying team, and there are three people on each "flying machine" to cooperate in the operation. They all had the same medal, which Yuan Zhao personally pinned to their chests.

"Regardless of success or failure, you deserve the special merits of the country. If you come back alive, that's your mark of glory. If...... This can also be used as a basis for searching for your remains. ”

At that time, Liu Xu, like the other seventeen companions, was about to be warned, and their young hearts only had blood and generosity. But he didn't understand why Yuan Zhao's tone was as sad and desolate. And when he really understands this kind of compassion, it will take a few years to come. At that time, the smoke and dust of the war dissipated, and he was the only one left among the eighteen warriors today!

The sun is gone, and the clouds are dissipating. The blood on his body is boiling, and the battlefield under his feet is also boiling. Captain Liu Xu, who was on the first "flying machine", felt the direction of the wind, he pulled up the red flag tied to the rope, and decisively issued the order to fight.

Each "flying machine" carried ten tin cans on it. Their task was simple, to throw these fuel-explosive devices into the Persian army. After the task is completed, they will drift down to a safe place along the direction of the wind as much as possible, and each will depend on the destiny of heaven in life and death.

The young lieutenant looked at his feet, and it was the place where the Persian warriors on the left had gathered. With the help of his assistants, he quickly threw the core of the tin can with a flotting device after igniting the core of the tin can, according to the method that had been practiced countless times in advance.

On the ground directly below a few tens of meters away, several Persian cavalrymen looked up at the monster overhead in the interval of preparing to charge. Then, they seemed to see a black dot falling.

"Look! There seems to be someone up there...... Yes! ”

The good-eyed Persian warrior finally spotted the figure looking down. They screamed loudly. Then, a great catastrophe befell the head.

The primer made of a special material burns quickly, and the tin canister filled with fuel ignites before it hits the ground. A deafening explosion rang out above the heads of the Persian cavalry, as if a sudden heavenly fire had broken its restraints and surged out with endless rage. Sweep everything, blood and fire!

It has to be said that the explosion in this position is extremely lethal. The pots made of pig iron were blown into thousands of pieces in an instant, and their lethality in the dense crowd was simply unmatched. Whether it is a man or a horse, it is difficult to be immune to this range.

The Persian warriors who had been struck by the pieces of iron fell from their horses, rolling on the ground and wailing. And those injured horses, after being frightened, jumped and galloped and trampled wildly.

What's even more terrifying and inexplicable is that the raging fire burns out. Countless grease-laden flames ignite everything instantly, no matter where they fall. War horses, human bodies, large shields, and even armor began to burn. The flames soared only in the blink of an eye.

It's just that the first explosion caused such a catastrophe, and hundreds of cavalry suffered heavy casualties. Immediately after that, the second, the third...... The swarthy tin pot shimmered with dazzling sparks, raining down from the sky with the breath of death. Violent explosions rang out one after another from different places. First the cavalry units on both sides of the Persian army, then gradually extended into the camel formations behind. It seemed to be the fury of thunder from heaven, and the flames and smoke and dust enveloped the entire Persian army with boundless fear and calamity.

At the same time, when the first explosion sounded outside the city, after receiving the order of Yuan Zhao, the jade gate closed the city gate and opened widely, and the soldiers of the Flying Dragon Army, who had been gearing up for a long time, under the leadership of the young general, flew out of their horses, and the sword light was like snow, and they would once again write the legend of heroes.

Behind them, 20,000 elite soldiers from Chang'an poured out, and they finally waited for the opportunity to go into battle to kill the enemy. Between now and dawn, they will carry out a merciless purge of all survivors of the Persian army on the battlefield outside the city.

And at the head of the city, the defenders of Yumen Pass, who had seen the battle situation in front of them, let out an earth-shattering roar. With swords and guns in his hands, he launched an all-out strangulation. Their mission is to send all these vicious creatures who are besieging the city to hell!

It was night, the fire outside the Yumen Pass was not extinguished, and the killing on the battlefield continued all night. All the officers and soldiers of the Han army have received the highest order, and no prisoners will be left in this battle. This is Yuan Zhao's personal order, and no one dares to disobey it.

In the Battle of Yumen Pass, the most elite army commanded by the Persian marshal Nehgu, including himself, was wiped out, and there were almost no survivors.

"History of the Han Empire: The Family of the Yuan Duke": "The Yuan Duke went out of the Jade Gate, fought the courage of the thunderbolt, 100,000 Western captives, and was drawn in a battle...... When the king of Persia heard the news, he was afraid of the might of the Han! ”