When human beings are faced with the unknown when they first see something, they tend to have two emotions.

One is curiosity, and the other is fear.

And in the face of the fireworks that appeared in front of the world for the first time, it was more of the latter, after all, the violent noise, the pungent smoke, and even the dazzling visual effects all showed that this was an extremely terrifying weapon, and it made people associate it with the meteor shower that terrified the world in the thirty-seventh year!

"Heifu is transformed by the glowing star, and this is also his witchcraft."

"Chu people believe in witches and ghosts, and they are obscene, and this must be the ...... of Chu Yue witchcraft"

Who would have thought that this was just an ordinary sky-skimming monkey and a small cannon battle?

Speculation and panic were permeated among the guards, and the Northern Expeditionary Army on Heifu's side was actually no better, and they were also frightened by this burst of fireworks.

Fortunately, Hefu had already sent someone to inform the battalions in advance:

"Let the second and third sons wait for the battle with peace of mind, this is the manifestation of the god of Danyang Shuibo, with the help of the Meteor Fire Crow of Wuzhong Marquis, to help the righteous master break through this pass!"

What kind of fire crow meteor is naturally black husband's nonsense, to put it bluntly, this thing is the guy that every household likes to put in the sky during the Spring Festival, but it is the secret weapon that he ordered Xu Fu to develop in Wudang Mountain for most of the year......

Byproduct.

As a former police academy student, Heifu, who had played with guns, naturally remembered some kind of mysterious recipe and planned for a rainy day, and after he joined the army a year ago, he decided to use a warlock to conduct secret experiments.

According to Heifu's understanding of the scholars, they are the most "chemist" people in this era, and it is said that the earliest black powder was learned by this group of guys, and it happened to be made during alchemy. Saltpeter, sulfur and other substances are necessary items for the alchemy of the magician.

In this year, the alchemists have attached great importance to saltpeter, and have constantly explored its properties, saying that it is "born of the air of the sea and the salt, and it is the most divine thing of heaven and earth,...... It can make seventy-two petrified and water, soft and moist hardware, and refine eight stones, although Da Dan is not reluctant to do this", which is regarded as the "Yin Jun" of alchemy.

The use of sulfur is more burning, probably due to the lack of natural sulfur in the Central Plains, and the magicians do not know much about this scarce item, only saying that it "can turn gold, silver, copper, and iron into strange things".

Although Xu Fu is more keen on seeking immortals overseas, the magician must be all-powerful, and Xu Fu is also involved in the art of burning mercury and alchemy.

Now there are ideas and development personnel, Heifu has merged with the southern counties, there is no shortage of money and manpower, and only materials are missing.

The collection of materials cost a lot of money, and considering that gunpowder must be of a certain purity and quantity if it is to be used in warfare, it is unreliable to scrape nitrate. Fortunately, there is a nitrate mountain (Jiangyou Laojun Mountain) in Zitong County, Shu County, well-known in Liangzhou, when the magician was Qin Shi Huang's alchemy, Dansha came from Ba County, and saltpeter came from Shu County. After Shu County was surrendered, Heifu's request to Shu County Shou was to let a few boats of saltpeter come out.

Sulfur is more difficult to obtain than saltpeter, it is said that there is it in the Western Regions, but after all, it is too far away, fortunately, the Northern Expeditionary Army has a huge fleet of ships, so from the overseas island of Fujian and Yue, Yizhou, try to trade with the local deer hunters, and transport a little sulfur......

These two things are thousands of miles away, gathered in Wudang Mountain, counting the material freight, the price is almost equivalent to gold, plus the charcoal obtained from local wood burning, Xu Fu began his experiment, in the past six months, there have been rumors of giant beasts roaring, clear sky and thunder......

Heifu has long said to Moji Ah Zhong that the science and technology tree has to climb one level at a time, and an invention can only be realized by several pre-existing technologies at the same time, so don't think about what artillery muskets, Xu Fu has been tinkering with two things for most of the year, one is the black powder with low purity and worrying effect, and the other is the "Meteor Fire Crow" made under the influence of Heifu.

But don't say it, this thing was taken out for the first time, and the effect was really good, and it actually made the Wuguan defenders make a big uproar, and Heifu expressed his understanding of this, after all, foreigners came to China during the Spring Festival, listening to the serial explosions outside, sparks were everywhere, and most of them would think that they were fighting, let alone ordinary people in the Qin period......

However, the brilliant fireworks in the sky are just a disguise, and the real killing move is still underground.

"Dashuai, during the day, there are already two tunnels secretly dug under the city, one on the west side and the other on the east side."

"Let's get started."

Seeing that the enemy was in chaos and had to strike with hot iron, Heifu asked people to give an order to the three armies: "Plug your ears!" Get ready to charge! ”

Don't think of black powder as TNT, let alone what explosives bags to make, the technology that human beings have spent hundreds of years spanning, Xu Fu is just a broken formula, and he can be stumped by purification alone, and what he makes is the worst black powder.

A few months ago, Heifu had been to Wudang Mountain to inspect the progress of black powder, at that time, it was a large two kicks, and the power at that time was to blow up cow dung, and even a thin small earthen wall could not be torn down.

However, even if it is a second kick, as long as the amount is enough, it still has a certain power, after discussing with Xu Fu, Heifu decided to combine this thing with the "cave siege" that has appeared for a long time, calling it the technique of "Ao Overthrow", so that Xu Fu did a lot of experiments in Wudang Mountain, and the specific method is:

Dig the ground first to the foot of the city wall, and then dig a horizontal corridor slightly outside the bottom of the city wall, and fill the horizontal corridor with a coffin of inferior black powder.

The amount of charge depends on the strength of the city wall, and in the unit of "quintal", it can be counted as ten quintals. Of course, gunpowder must be wrapped and sealed with coffins and other equipment to protect it from moisture, and it is also prone to explosion after burning violently. The letter was then sealed out of the tunnel, and then ignited and detonated......

Don't look at this kind of usage is old-fashioned and troublesome, later generations of Turks attacked Junbao, the Taiping army swept the south, this technique is more miraculous.

However, Wuguan is a three-foot thick earth wall at the bottom, which is not the same as an ordinary Guancheng, Xu Fu has been tinkering for several months, and by constantly increasing the amount, or adjusting the position of the coffin, he has also succeeded so many times, he felt that it was okay, so he hurried north with several carts of secret weapons......

At present, Xu Fu has gone to ignite the immortals, and everyone else has been ordered to cover their ears, but Heifu is not, he looks at the Wuguan wall under the reflection of the firelight on both sides with anticipation, looking forward to the sound of the sky falling apart!

In the imagination of Haifu, then, when there was a loud bang, thick smoke rose into the air, bricks and stones flew, and a gap was blown open in the city wall, and the soldiers shouted the horn of the charge, and immediately attacked the gap with the smoke......

Since then, the Xiongguan city can no longer be difficult to defeat the attacker, Qin Shi Huang's heart of the "famous city", remove the world's defense, and finally completed by Heifu in this way.

What a romantic thing it is!

Time passed by seconds, the torch was raised in front of it, and it kept shaking, and the people at the mouth of the pit desperately retreated, which was already on fire......

At this moment, it was only a while before the fireworks and artillery battle of the monkeys were released at Chaowu Pass, and the enemy was still panicked and did not notice.

Hefu mentally calculated the speed of the lead fire.

"Three."

"Two."

"One!"

After a slight delay, there was a "boom", and there was a dull loud noise from the ground, as well as a tremor, and the Wuguan city wall!

It!

After shaking a few times, he was still as safe as a rock, and he didn't move!

Not even a piece of the wall skin has fallen off!

"Damn!"

Heifu glared at Xu Fu fiercely, and the wall that he had said collapsed suddenly!? This warlock is really unreliable.

Xu Fu was also so anxious that he bit his fingers, after all, the experiment and the actual combat are different, but fortunately, there is more than one blasting point in the cave, and in the blink of an eye, there is a muffled sound underground!

This time, after a period of shaking, I don't know if that section of the wall was poorly repaired, or buried in the right place, or the attacker and the defender fought a tunnel battle to hollow out the foundation underneath, and that section of the wall collapsed......

But it only collapsed vertically, causing the people standing on it to stumble, and it was still 108,000 miles away from the city wall with a bang.

"Sure enough, it's a second kick."

Heifu scolded his mother in his heart, like a player who failed to open and hang, but the soldiers of the Northern Expedition let out a violent cheer after covering their ears and seeing this scene.

"The ground is moving! The ground is moving! ”

"Our army has divine help!"

On the contrary, there was silence on the guard's side, and then the dog barked and the people cried, and it became more and more chaotic.

"I can't wait any longer!"

Although things were not quite as expected, the arrow had to be fired, and the enemy army could only be frightened and immediately attack the city!

So Hefu asked the three armies to take advantage of the chaos and shouted:

"The First Emperor has appeared!"

"The Marquis of Tongwu has appeared!"

"Meteor fire crows descend from the sky, the earth shakes the mountains, help me enter the customs!"

It's a scientific method, but in the end, you have to put on the skin of superstition to win, which is really funny.

The attacking coach panicked, but fortunately, his subordinates were all high-spirited and their morale was soaring, but they were ten times more panicked than Heifu in the face of the coach and the small soldiers......

Countless ladders were erected high by the stormtroopers led by the Dongmen Leopard, ready to be attached to the ants, and Heifu drew his sword and gave the order for a general attack forward:

"Enter!"

"Enter!"

"Enter!"

……

June 16 was a magical night, there were many visions that shocked the world, and the parties had different opinions, but fortunately, after watching the whole process, the royal literati Shusun Tong watched the whole process, when the leopard at the east gate in front of him broke through first, he had already held an excited and trembling pen, and wrote down the following record:

"In the thirty-eighth year of Qin Shi Huangdi, on the fifteenth day of June in the summer calendar, the Marquis of Wuzhong led the Northern Expedition, surrounded the Wuguan three times, hundreds of camps, more than ten zhang of cloud cars, overlooking the city, the banner covered the field, the dust covered the sky, and the sound of cymbals and drums was heard for hundreds of miles. Or for the tunnel, rushing to the city, but the rebel army stubbornly resisted, making a fight of trapped beasts, accumulating crossbows and sending out randomly, arrows raining down, and the righteous teachers were not allowed to enter. ”

"All the righteous teachers will lose their sharpness, cowardly and want to retreat, only Wu Zhonghou thinks that this pass must be done, the merit is missing, the spirit is very easy, and everyone is puzzled."

"On the night of the sixteenth, if there was a meteor falling into the city, ten thousand fire crows flew into the city, spewing fire in their mouths, smoke on their wings, howling and restless, and the guards exclaimed, and bowed their heads."

"During the day, there was a fire splashing on the ground, the sky shook and the earth shook, the loud sound was like thunder, the Wuguan wall was broken in response, and it collapsed more than 100 steps, and the officials in the city were all frightened, thinking that the gods were also, and they did not dare to fight with troops. The righteous teacher then came out with a clamour, shaking the heavens and the earth, the rebel army collapsed, more than 10,000 people fell, those who abandoned the city and walked away do not know how many, and the 100,000 people after the pass also retreated, and the people who walked practiced each other, ran for more than 100 miles......"

After describing what he saw, the uncle and grandson looked at the white belly of the fish in the sky, thoughtfully, and added a paragraph of his own private goods:

"You should accept it with virtue, not how it is. In the past, King Wu of the Zhou Dynasty crossed the Mengjin bank, six horses sang together, the meteor was like a red black, and the white fish entered from the outside, isn't this the destiny of heaven? Now that the Marquis of Wuzhong has entered Wuguan, a divine fire has fallen from the sky, and the earth has moved and the wall has collapsed, isn't this the mandate of heaven?"

After writing, Shusun Tong scratched his face in embarrassment: "I thought that the prince was black, and it was still appropriate to succeed Qin Shuide, but now, it is the fire of the sky and the collapse of the earth, should he be regarded as a fire virtue or a soil virtue?" ”

……

ps: It's just morning, I'm out on the waves, say good night in advance.