A large amount of turf was torn off, and mud and rocks splashed the ground ten or twenty meters high!

Violent explosion!

Qian Fei'er's figure retreated backwards from the center of the explosion, flying backwards for a certain distance and being directly knocked to the ground by the powerful shock wave.

At this moment, the mud and rocks in the sky fell downward.

"Boom!"

All the mud and stones fell, and a large number of mud and stones directly buried Qian Fei'er, the first empress of the Wuhun Empire, alive.

Of course, this can't do harm to the king of angels who has been on guard for a long time, and only for a moment, I can only hear "Bang!" There was an explosion, and in the mud and rocks, Qian Fei'er's charming figure reappeared on the surface.

Standing on the ground, Qian Fei'er laughed wildly.

"Hahahaha, I've finally made nitroglycerin! Hahahaha! ”

Nitroglycerin, a high explosive developed in modern times, has an energy content much lower than that of black powder, but because the reaction in a short period of time is more violent, the power of the explosion is far greater than that of black powder!

Nitroglycerin is very dangerous, and the slightest shaking and concussion will cause an explosion, like Qianfei'er just now, an accident occurred.

If she hadn't dealt with and defended herself, otherwise, the first empress of the Martial Spirit Empire would have a halo on her head, die on the spot, and her soul would spiral to heaven at 360 degrees.

Successfully made nitroglycerin, Qian Fei'er touched her chin with one hand, her good-looking willow eyebrows frowned slightly, and she groaned slightly.

The power of this nitroglycerin is indeed amazing, but it is also too dangerous, not to mention killing the enemy, it is extremely difficult to transport and preserve, I am afraid that I can't even hit the enemy, so I will blow myself up.

What should I do?

Well, it seems that we have to continue experimenting and add other additives to make it stable......

Qian Fei'er stretched her eyebrows and made a decision.

Since then, Qian Fei'er has not been in the morning court for a month, all government affairs have been thrown to the prime minister, and the nitroglycerin stability test has been carried out all day long, and various reagents have been added to nitroglycerin, trying to make it undiminished, but it has become more stable.

The prime minister recorded in the later history books that Her Majesty the Empress was obsessed with the development of all kinds of high explosives all day long, and could not extricate herself, and openly declared in the court that 'art is an explosion, and art is a big star'.

Finally, after more than a month and nearly a thousand tests......

Wuhun Empire, outside Tiandou City, autumn, shooting range outside Tiandou City, morning.

Qian Fei'er stood behind a sandbag, and through the sandbag, there was a small flat table, on which was placed the prepared nitroglycerin.

Qian Fei'er propped up a soul power shield, and her slender jade hand scooped a small spoonful of algae-brown soil with a small iron spoon, and carefully, attentively, and gently put it into the glass beaker containing nitroglycerin.

Don't explode, don't explode......

Qian Fei'er muttered silently in her heart.

Fortunately, after the earth-like substance was put in, the nitroglycerin did not react in any way, and fortunately, Qian Fei'er was not overturned by the violent blast wave as usual and buried alive.

On the table, the bottle of nitroglycerin, which had a somewhat pungent sour taste, became cloudy due to the addition of an earthy substance, and then nothing else changed.

Qian Fei'er took a step back, took out a small iron rod from her soul guide bracelet, a little far away, and gently poked the beaker, causing nitroglycerin to shake slightly.

It's going to explode!

Qian Fei'er quickly lowered her body, clasped her ears with both hands, and opened her soul power defense shield to the maximum, ready to resist the incoming powerful impact!

But......

After two seconds, nothing happened.

Well?

Qian Fei'er stood up in surprise, and her squinting eyes opened a little in surprise.

She stepped forward again, boldly picked up the beaker with her right hand that was as smooth as jade, and shook it with a little force.

As soon as it changed, Qian Fei'er turned her head, closed her squinting eyes tightly, and opened the soul power shield to the maximum again, for fear of being injured.

She has been bombed many times in a row for more than a month, and every time she has been blown up, she is afraid of being blown up!

Now, she didn't want to be blown up by the high explosives.

Fortunately, inside the beaker, nitroglycerin was gently shaken, but there was no violent reaction and no explosion.

Well? Don't...... It worked?!

Qian Fei'er turned her head in disbelief, and opened her eyes with a pair of squinting eyes, her eyes full of surprise!

She tried to increase her force, and even threw nitroglycerin directly, but the nitroglycerin did not explode, until finally she lit it with a small match, and the nitroglycerin reacted violently and exploded on the spot!

"Bang ——!"

The sandbags of the strong shock wave were all dumped and scattered, because they were a little far away, this time, Qian Fei'er was not buried alive.

Qian Fei'er stood up from behind the sandbag, her face full of excitement and excitement!

Finally, it worked!

So far, Qian Fei'er has finally succeeded in making a safe high explosive, and more than a month later, she has also successfully developed a smokeless yellow gunpowder that replaces black powder as the base fire.

From this day on, the Wuhun Empire began to mass-produce 12.7 mm caliber machine guns, and at the same time greatly improved the original aircraft, from propeller aircraft to jet fighters.

The northern part of the Wuhun Empire, outside Tiandou City, shooting range, afternoon.

It's already September, because it's in the north, the weather has become a little cold, although it's still daytime, many pedestrians and soldiers have begun to put on coats and two clothes to keep warm.

At the shooting range, Qian Fei'er, who had long golden soft hair and a pair of squinting eyes, stood behind a huge cannon with an elegant and easy-going appearance and a straight nose and a square mouth.

The barrel of the gun is six and a half meters long, and with the addition of the breech and gun mount, the total length is already twelve meters!

Wuhun Empire's 155 mm standard artillery!

It's just that, compared with the original 155-mm gun, the current gun has a slightly larger gun mount, no fire holes on it, and no slide cover, but an extra brake.

The brake is set up inside and out, and it looks like it is pulled outward, and there is a ring at the outermost end, which is connected to a long rope more than seven meters long, which seems to be used for dragging.

Looking inward through the pull gate, you can see that there are two powerful and huge springs near the entrance of the pull gate, and it is estimated that you will have to bounce into it and bounce back into place when you pull it.

And next to the artillery, there is a large box...... Huge cannonballs!

Unlike the previous grenades, this time, the shells in these large wooden boxes are larger, the warheads remain the same as before, and a huge cylindrical metal object is added behind the buttocks, which has become longer and has a larger cross-sectional area.

Qian Fei'er walked behind the cannon at this time, opened the cannon chamber, and then used her huge strength to pick up a huge cannonball and stuff it into the cannon chamber.

Plugged, she closed the chamber and adjusted the elevation angle to forty-five degrees.

Forty-five degrees of elevation, the angle of elevation of the maximum range of any projectile weapon, at which the elevation angle is increased or decreased, and the range is reduced.

Getting ready, Qian Fei'er turned her head to look at Ning Fengzhi, who was coming with her, and smiled slightly.

"Sect Master Ning, protect your ears."

"Thank you, Your Majesty, for the reminder."

Ning Fengzhi smiled and nodded in response, then used his soul power to protect his ears, and then covered them with his hands.

Ning Fengzhi was next door, and Sword Douluo, who followed and protected, also protected his ears, but the difference was that Sword Douluo relied on his strong soul power, and did not use his hands, but simply used his soul power.

Qian Fei'er looked at the two of them, smiled lightly, and protected her ears with her soul power, and grabbed the rope more than seven meters long with her slender jade hand, and pulled it with a little force!

"Bang ——!"

The whole earth seemed to shake, and after the artillery, the two forked brackets directly supported the dirt behind it and splashed outward, splashing several meters!

At the same time, the entire huge artillery jumped from the ground, except for the brackets, and even two rubber tires left the ground!

At the same time, the barrel of the gun shrank violently, the air around the muzzle of the gun fluctuated violently like a wave of water, and a completely invisible phantom flew out.

Later, a valve opened behind the side of the gun, and a huge metal shell rolled out, still steaming hot.

Ning Fengzhi, who was a little farther behind the station, looked at the metal shell, and saw that the metal shell was in the shape of a cylinder, with an opening in the front and a back cover, and the exterior and interior were very smooth.

Ning Fengzhi was very curious, looked at Qian Fei'er, and asked.

"Is this Her Majesty's improved ammunition? Compared to the previous grenades, the gunpowder is sealed in this cylinder, right? ”

The Seven Treasure Liuli Sect has become the royal guardian sect of the Wuhun Empire over the years, and Ning Fengzhi often visits the arsenal to watch and learn about some artillery knowledge.

In front of Ning Fengzhi, Qian Fei'er smiled lightly and shook her head.

"No, of course it's more than that, this is a new addition to the 'shell', in addition to the changes in the shells on the outside, there are also changes on the inside."

"Oh? What is it? ”

Ning Fengzhi asked curiously.

Qian Fei'er had a touch of mystery on her face, and put a jade index finger in her right hand in front of her mouth and gestured.

"Shhh, keep it secret, Sect Master Ning will know later."

Qian Fei'er didn't say anything, Ning Fengzhi was interested, but in view of Qianfei's identity as the empress and his own face, Ning Fengzhi didn't ask any more, he frowned slightly, then stretched out, and smiled gently.

"Hehe, then I'll wait here, waiting for Her Majesty the Empress to bring a surprised and big-mouthed expression."

Qian Fei'er chuckled again, noncommittal.

After stopping for a while, a flying soul master flew from the sky in the distance, landed in front of Qian Fei'er, knelt on one knee, clenched his fists, and saluted respectfully.

"Your Majesty, the artillery grenade flew just sixty miles, and because it was a grassland, it missed or injured anyone, and hit the wilderness."

Beside Qian Fei'er, Ning Fengzhi's eyes widened suddenly, and his eyes were like bells!

"Sixty miles? So exaggerated? Make no mistake?! Hiss——! ”

Ning Fengzhi took a breath of cool air, really a little incredulous.

But on the other end, Qian Fei'er was a little clear.

Sixty miles? Not bad, it should be that the cartridge case is closed so that the energy of the gunpowder inside the shell does not leak out at all, and the yellow gunpowder is more powerful.