The fire was bright under the night sky, and the shouts of killing were loud.

Bonfires and torches complement each other, and this borderland seems to have suddenly turned into a vibrant bustling city.

Meng Fan stood at a high place and looked down at this scene.

If you look at it from the perspective of a poet, the world between heaven and earth is so magnificent that it is completely worthy of writing and writing, but he is fighting for it bloody and life-and-death.

In order to improve the gathering efficiency, he deliberately hung up the soul-calling flags and gathered only the soldiers of the Tang Dynasty. It was better for Tuyuhun and the Tubo people to leave their souls alone.

Without mercy or emotion, the Duke of Yan could not think of any good solution. The generals of the past dynasties used their lives to fill the gap, killing until the blood was everywhere and the enemy had no strength to resist, and then took over this military stronghold.

The shouts of killing lasted for half the night, and the Tibetan people in the stone fort were exhausted, while the Tang army and Tuyuhun were in conflict with each other. No one was willing to throw their lives into a bottomless pit like moths to a flame.

It would be nice if there were cannons.

It is true that the power of thunder is no worse than this, but Meng Fan does not want to bear the responsibility for this cause and effect.

What's more, when the two armies are fighting, the national destiny and evil spirits are impacting, making it difficult for Taoism to be used.

After thinking about it, Meng Fan suddenly came up with an idea. He ordered the counties and counties in Longyou near here to provide gunpowder——

This thing actually appeared very early. During the Spring and Autumn Period and the Warring States Period, simple gunpowder had already appeared.

The alchemists only used it to make elixirs. Because the emperors of later generations all wanted to live forever, they summoned many alchemists to search for medicine. Gradually, people knew that the three ingredients of sulfur, saltpeter, and charcoal were mixed in

Together, igniting can produce a violent combustion effect.

Of course, the early gunpowder could not achieve military effects at all, so it had to be improved to use black powder.

Meng Fan couldn't purify the things discovered by his Taoist ancestors?

It's just not as powerful as later generations.

As the first batch of processed raw materials was delivered, a certain area of ​​the military camp became a testing ground.

[When gunpowder breaks out, the sound is like thunder, and the heat reaches more than half an acre. Human and cowhide are all broken into pieces without leaving a trace, and armor and iron are all penetrated.]

Some civilian officials with the army recorded this. Although it was an exaggeration, it had indeed reached a level that could be put into use, which made the generals very excited.

To be honest, Meng Fan regretted why he didn't think of this method earlier, which would have spared the sacrifice of thousands of his own people.

After finding a suitable ratio, states and counties were required to collect poisons, such as arsenic, sulfur, agarwood, croton, wolfsbane, and a series of other things. Anyway, whatever was poisonous was stuffed into it.

After these things are mixed into a sphere, use old paper, hemp leather, charcoal powder and other materials to mash them evenly, stir them into a paste and apply it on the surface...

Datang version of chemical weapons.

It is perfect for dealing with Tubo beasts.

What kind of humanity can we talk about with the aliens who are invading the country and causing massacre?

Unfortunately, difficulties will always arise.

Going around and around, anywhere within a safe range, the catapult faces the problem of insufficient range.

But there are always more solutions than difficulties. After some discussion, we finally decided to build a few earthen hills by the Huangshui River under the cliff. When the time comes, we can get the catapults up and launch them from a high position, which will increase the limited distance!

As for how high the mound should be built?

Trigonometric functions.

Meng Fan also experienced the joy of being an academic master. Combining his middle school and high school mathematics knowledge with the records about the stone castle in the file, he quickly formulated the relevant values.

The Tubo people don't know much about the deadly weapons like gunpowder balls, but just a large catapult is enough to give them a headache. However, they are condescending and have no way to access the construction site - their skills are really limited. Although they secretly learned some craftsmanship skills, they can still do it.

Ballistas, catapults, ladders and other equipment, but the quality is not to be praised, the range is also greatly reduced, and they cannot threaten the construction site.

If you want to stop the craftsmen from continuing the construction, they can only come out of the square platform and use close combat to solve the problem.

As a result... taking advantage of the darkness, the Tubo people actually sent a group of dead soldiers.

However, they arrived too late, and there was nothing they could do about the earth mountain that had been built up. The fire could not burn it at all.

So, these guys lifted up the thick wooden pillars and hit them, trying to knock down the mountain of earth like attacking a city gate. However, in this important military location, the soil was extremely compacted, and no matter how hard they collided, it would not move.

At this time, the nearby defenders also rushed over in time.

Finally found a way that does not require human life, but it has been delayed for so long?

What a joke!

After a lot of fighting, the Tibetans who stubbornly resisted were either killed or maimed, and they completely gave up the idea of ​​causing destruction.

On the day of completion, the Tang army held a very solemn ceremony to worship the gods.

At the foot of the earth mountain, horses, cattle, sheep, chickens, dogs, hogs and six other animals were placed, and grains, flowers and fruits were presented. Then, all the generals headed by the Duke of Yan knelt down at the front to worship.

After paying homage, Meng Fan unfolded the manuscript written by Lou Shide and read in a deep voice:

"On the second day of the first lunar month in the third year of Fu Weiyifeng, Li Jinxing, Duke of Yan State of the Tang Dynasty, would like to offer grains and fresh fruits as a sacrifice to the emperor, the God of Haotian, the Five Emperors of China, the Yellow Emperor, Zhuan Xu, Shaohao and Taihao, the sun and the moon of Sheji... Shibao City was built in the Sui Dynasty, just like the Han Dynasty..."

What does it mean to be famous as a teacher?

There is no doubt about the sovereignty of Shibao City, and this place is the indisputable sacred territory of the Tang Dynasty.

Lou Shide wrote emotionally in his memorial text, warning future generations not to forget the hardships of their ancestors in overcoming obstacles and opening up new territories in a bitter cold land. It also boosted morale. After all, everyone was participating in a just battle!

After reciting the sacrificial text, Meng Fan was immersed in the sacred and inviolable atmosphere of the article. Then, wearing a spotless white robe, he took the blood of the animal, knelt down and dripped it into the copper basin of wine in front of him. This was a blood sacrifice, and it was probably me. I recommend the source of Xuanyuan with my blood.

Generally speaking, sacrifices of this kind are called trespassing if used by anyone other than the emperor and the prince, with the exception of soldiers participating in national wars.

Everything is ready!

The Tuyuhun people watching the ceremony not far away felt that the Tang army had become different.

In this way, the war began again.

The Tang Dynasty was responsible for using catapults on the earth mountains, and when it was necessary to charge the square platform, the Tuyuhun people would still do it.

As the war drums rumbled a few times, the sound of teeth grinding caused by the violent friction of wood was heard, and then fireballs with billowing black smoke were seen flying into the sky.

At first, the accuracy was not good and there was a certain deviation. After some adjustments, it became more and more accurate.

Especially after the gunpowder was ignited, a dazzling light ignited amidst the roar. Eight heavy catapults took turns throwing the gunpowder balls over.

Not long after.

Thick smoke was everywhere.

It lasted intermittently for more than an hour, and the stone city located on the cliff was now filled with smoke, as if it was shrouded in heavy fog.

When the generals saw this, they became more comfortable. The old and solemn Duke of Yan, Li Jinxing, couldn't help but lose his composure. He looked back and said with a bad smile:

"This smoke contains arsenic, sulfur, grassroots, croton, and almost all poisonous things in the northwest. It's enough for them to drink a pot."

"By the way, Jiuru."

"What exactly will happen if you suck on this stuff?"

Meng Fan thought for a moment and said calmly: "It can range from bleeding from the mouth and nose to vomiting and diarrhea, or in severe cases, death due to poison."

Hei Te Changzhi laughed loudly: "It would be best to poison these dogs and rats to death. We can just send people up to take over the city."

"Yes, Stone Castle City? Iron Blade City?"

Wang Xiaojie was not reserved at all. He stroked his lush beard and said with a smile, "Nothing."

When the trebuchets stopped, the Tuyuhun people marched in formation and rushed up the mountain along the only path.

The two square platforms below the city had been temporarily abandoned by the Tang army. At this moment, the two square platforms, one large and one small, were already devoid of enemy soldiers. These guys were either killed by the bombing or retreated to the top of the mountain.

Meng Fan and others stared at the top of the mountain, expecting the result. Unexpectedly, when the Tuyuhun soldiers rushed up, they immediately encountered resistance. Various things rolled down, and many slaves who were used as cannon fodder were knocked and rolled over.

From a distance, it looked like an avalanche. When many people fell off the cliff, their limbs were still scratching in the air, and then they fell to the foot of the mountain and died immediately.

After a burst of noise, the Tuyuhun people withdrew, and the heavy riprap trucks resumed operation.

"How can these Tibetans endure so much poisonous smoke?"

"I guess I covered my mouth and nose with a wet cloth to hold them in for a while." Meng Fan didn't care and said seriously: "Let's continue to smoke them for a while, and the number of poisonous fireballs will be enough."

"It doesn't matter if we delay it for a few more days. There are many craftsmen in the army. At worst, we will order people to continue transporting materials from Shancheng. We can do it temporarily."

The catapults worked in turn, firing poisonous fireballs one after another, almost day and night.

In addition, strong bows and crossbows, as well as various traps, are displayed at the intersection below the square platform to prevent the Tibetan defenders from rushing down from above.

After one night, not only was the mountain top filled with smoke, but even the Tyuhun soldiers guarding the mountain pass could not bear it. They also smelled the pungent smell, and some had weak resistance. They immediately had bleeding from their mouths and noses, and many discomforts followed.

At first, the Tuguhun people who were used as cannon fodder could cover their mouths and noses with wet cloths to hold on, but people have to breathe. This method could not completely filter the poison. Finally, the Tuguhun soldiers guarding there received an order to evacuate.

This is true for people on the edge, let alone the center?

Meng Fan cast another spell and blew the strong wind for two hours. The Tuyuhun soldiers once again went up to lead the charge. They each wrapped their heads and faces with wet cloths and charged towards the top of the mountain with anxiety.

This time, they did not encounter any form of resistance at all. After a while, they saw the generals from the front coming to report that the stone castle had been breached.

Most of the Tibetan people in the city were poisoned to death, and the rest hid in a closed stone house and blocked the ventilation holes with various wet cloth strips. Therefore, they survived, but they were unable to organize a defense.

When the Tuyuhun soldiers arrived at the city, the remnants of the Tibetan soldiers were completely surrounded. After realizing that the situation was over, they all chose to surrender.

At this point, Shibao City fell into the hands of the Tang army again. After a few years, the flag with the name of the Tang Dynasty was once again planted on the top of the mountain.

Except for the large-scale casualties at the beginning of the war, there was not much bloodshed in the later period. During the siege of the city for several days, only a hundred soldiers were killed or injured, and all of them were Tuyuhun people. On the Tubo side, more than 200 people died in the battle and were poisoned.
To be continued...