After this arrow was shot, Pei Min stepped forward and ran backwards. Pen "Fun" Pavilion www.biquge.info

Eighty catties of black powder, how powerful Pei Min has not seen it, and he does not dare to be careless.

He didn't want to be the first pioneer in history to stone black powder to death, and the black powder was still his own.

By practicing Sun Simiao's health preservation method, his explosive power is extremely strong now, and the distance of 100 steps is ten seconds.

and Li Longji and their large army gathered together.

Thinking that the distance of 100 zhang is about the same, at the same time, I can't help but have a thought in my mind: what will happen if the explosives are much more powerful than imagined and blow up all the voters?

Of course, he just dared to think about it......

really blew up this Manchu Dynasty civil and military force, then he Pei Min is a sinner for the ages.

Black powder is not an explosive for later generations, and it explodes as soon as it reaches the point.

The principle of black powder explosion is that potassium nitrate liberates oxygen, which makes charcoal and sulfur burn violently, and instantly produces a large amount of heat and nitrogen, carbon dioxide and other gases. Due to the rapid expansion of the volume, the pressure increases violently. About every four grams of black powder burned on fire, it can produce 280 liters of gas, and the volume can expand nearly 10,000 times. In a confined space, the gas expands rapidly when heated and causes an explosion.

It is an explosion produced by black powder by combustion, allowing the gases to squeeze and expand.

The smaller the spatial range of the gas, the faster the explosion.

The rammed earth hut has a certain amount of space, and when the gas does not fill the space, it will only burn instead of explode!

This combustion takes a certain process!

The civil and military officials all looked at the rammed earth hut nervously and solemnly, Li Longji and Gao Lishi secretly stuffed cotton into their ears after Pei Min shot the arrow, and also stared at the rammed earth hut.

One second!

Two seconds!

Three seconds!

Four seconds!

Until ten seconds, Pei Min ran closer, and the rammed earth hut still didn't react.

Ten seconds is usually just a few breaths, but everyone is waiting with bated breath in anticipation, and it becomes a long time.

Nervous unexpected disappointment......

All kinds of emotions appeared on the faces of civil and military officials.

Even Li Longji and Gao Lishi couldn't help but look at Pei Min.

Pei Min knew the principle of the explosion of black powder, and said with a smile: "Let it burn for a while!" ”

A few more long seconds passed!

Lu Huaishen glanced at Pei Min proudly, thinking that it was really a little hairy child, with no hair on his mouth, and he couldn't handle things well, so he said, "...... minister"

He's just spoken!

Suddenly!

"Boom" with a loud bang!

A bolt from the blue!

The earth shakes and the mountains shake!

Eighty catties of black powder are extremely powerful!

The rammed earth hut is sturdy, but it can't withstand the power of the explosion......

The rammed earth hut scattered in all directions, and flames rose into the sky, blasting in all directions at a terrible speed.

The air currents converge like a wave, rushing in all directions, rolling up the dust on the ground, forming a tsunami-like smoke and dust that swells in all directions......

The burning of saltpeter produces a huge black smoke, which gathers in the sky and gathers into a terrifying mushroom black cloud......

In such a situation, even Li Longji, Song Jing, and Su Ying have seen a lot of people, but they have never seen such a scene caused by manpower.

Li Longji's face changed suddenly in fright, and he only felt that the spectacular wave of qi rushed towards him, and he couldn't help but take a small step back.

Pei Min was mentally prepared and helped him at the right time.

Li Longji calmed down before he was relieved.

The surrounding ministers of civil and military affairs were not so lucky, they were not mentally prepared at all, as if they were thunder in the flat ground, which made them dumbfounded, and their hearts were filled with fear.

Especially when the dust and waves are whistling, some people have weak soles of their feet and want to move, but they can't move, and they feel like they are collapsing to the ground.

Song Jing clawed his tongue and opened his mouth wide, looking like he had seen a ghost in a hundred days.

Su Ying was stunned, holding his ears with both hands, closing his eyes, and not daring to look again.

Especially Lu Huaishen, others are still on guard. Seeing that the rammed earth hut had no movement, he only thought that in the face of the sturdy hut repaired by the military department, Pei Min's small methods were useless, and his mood was relaxed.

Suddenly there was an earth-shattering explosion!

The old but able to eat and sleep with the prime minister was frightened, and he took three steps back, but because the soles of his feet were weak, he squatted on the ground with a buttocks, looked at the rammed earth hut that had become ruins ignorantly, and said in despair: "How is it possible, how is it possible!" How could this manpower cause such great power? ”

When Pei Min heard this, he pursed his lips disdainfully and said, "Rare and strange!" ”

In the 21st century, he has seen the blasting of high-rise buildings, and the explosives are the real explosives, so he naturally does not think it is strange.

But in ancient times, manpower was deliberately used to cause such a terrifying instantaneous explosive force, and this experiment was the first time in history.

The civil and military officials here, except for him, Pei Min are all frogs at the bottom of the well.

Seeing this scene for the first time, there is no reason not to be afraid or shocked.

Not only in the military academy, but also the entire military department, and even several surrounding departments were shocked by this shocking sound, and they didn't know how many teacups and pens were broken......

A group of people who didn't know what was going on thought that the earth dragon had turned over, some ran out of the house in a panic, and some went directly under the case.

The guards of the military department did not know what was going on, and they flocked to the military academy with the intention of escorting them.

Pei Min turned around and looked at Lu Huaishen who was sitting on the ground, he didn't want to miss this kind of opportunity to fall into the ground, and said apologetically: "I didn't expect that the power of this black powder was too great, and Lu Xiangzhen sat on the ground, at the fault of the bottom, at the fault of the bottom." ”

As he spoke, he reached out to help Lu Huaishen.

Where can Lu Huaishen afford to lose this face, and he wants to force himself up, but his limbs are weak, he only gets up halfway, and sits down again.

It was Cui Yuan, the waiter of the Ministry of Works, who helped him up.

"What do you think?"

Pei Min accepted it when he saw it, and looked at all the ministers of civil and military affairs.

After a long while, Song Jing said deeply to Pei Min: "Guogong, you are really a god!" ”

He was convinced!

The present world of black powder is of great significance.

With black powder, it is impossible to build mountains and mountains, build bridges and pave roads, and how much manpower, material and financial resources will be saved, which is completely incalculable.

Datang mastered black powder, which has cross-era significance.

Su Ying also said deeply: "Guogong let the black powder such a divine thing reappear, and the merit lies in the Qianqiu Sheji!" ”

Li Longji took out the cotton from his ear and laughed: "Even with this thing, I feel shocked." With this artifact, I finally understand why Pei Aiqing is full of confidence! ”

The civil and military officials couldn't say a word, and the power of black powder shocked them too much.

This advanced product beyond the scope of their understanding, this scientific object made by man.

It exploded, shattering their old consciousness and opening the dry well that trapped their vision...... Make them aware of the greatness of manpower.

As long as there is a pursuit, there is nothing that cannot be done, not to mention opening mountains and cultivating mountains, even if it is to go to heaven and sea, it is just as possible.

The civil and military officials all looked at the young man with some admiration, there was no doubt that he had created another miracle.