After a few seconds, Qian Fei'er cautiously exposed half of her head from the trench, and also propped up a soul power shield, carefully looking at the place where the mortar shell had just fallen.

A little farther away, mortar shells fell to the ground, because the refill powder had burned out, and now there was no reaction.

Fortunately, it's a dud, whew~

Qian Fei'er breathed a sigh of relief in her heart, and wiped the sweat on her forehead with the back of her hand.

Then she walked out of the trench to the unexploded mortar shell, picked it up, and watched with a frown.

How can it only fly out a little bit? What went wrong?

At this time, Ning Fengzhi also walked out of the trench, he looked at Qian Fei'er and reminded him.

"Could it be bad luck? Maybe the shell we tested won't work, so let's try another one? ”

Well......

Qian Fei'er touched her chin with one hand, thought about it, and felt that what Ning Fengzhi said was also right.

Immediately, Qian Fei'er put down the unexploded mortar shell, put it aside, and then took out a new shell from the other side and put it on the muzzle of the mortar cylindrical in the sky above the diagonal front.

Aligned, Qian Fei'er let go of her hands and quickly covered her ears.

"Boom!"

The mortar spat out another shell, and the result was ...... Same as last time!

The bottom of the shell, with a pronounced flame, flew from the muzzle...... No! Whether it's spitting, like a person eating grapes and spitting out grape skins, or spitting into the sky, "Poof! "I threw it out!

"Not good!"

Qian Fei'er was startled, and slapped Ning Fengzhi with a fierce palm.

This time, Ning Fengzhi was prepared, and he took the initiative to pounce into the trench with a quick movement, without giving Qian Fei'er a picture.

Qian Fei'er's strength is too great, and her arm is about to break for her, but she can't be hit again!

Ning Fengzhi thought to himself, and touched his left shoulder in fear, where there was still a faint pain from the last time he was photographed.

On the other side, Qian Fei'er also quickly threw herself into the trench to avoid the explosion of the mortar shell.

It was at this moment that the mortar warhead fell to the ground.

"Bang!"

A large amount of earth was dispersed by the shock wave of the explosion, or fell from the sky or from the slope of the trench, spread on the two men, and buried the two people in the trench on the spot.

"Bang!"

Qian Fei'er used her martial spirit to jump up from the buried trench, and by the way, she shook the soil buried on her and Ning Fengzhi's bodies.

Ning Fengzhi stood up from the trench with a dirty face, he patted the dirt on his body, spit a few mouthfuls of dirt spittle, and then looked at the front of the trench, that is, the position where the mortar was originally placed.

On the ground, the 60-millimeter mortar had been blown up, the steel barrel had been shattered into several large pieces, the bipod had been broken, and the wooden box with shells next to it was missing.

Was it accepted into the soul guide by Qian Fei'er in advance, right?

Ning Fengzhi thought so in his heart, and then looked at Qian Fei'er.

In the trenches, Qian Fei'er's jade hand, which was wrapped in a lot of dirt, wiped it in the soul guide bracelet on her wrist, and then there was a slightly conical metal object on her hand that was not particularly large.

There were several metal wings at the tail end of the metal object, which were the same 60 mm caliber mortar shells that Qian Fei'er had used before.

Qian Fei'er looked at the mortar shell in her hand, her thin willow eyebrows furrowed slightly, and she pondered.

If two mortar shells fail to fire in a row, it should be that there is a problem with the shells or the mortar itself, so what is the problem?

Qian Fei'er thought about it as she used her powerful strange power to shatter the outer metal shell of the cannonball, remove it and throw away the fuse.

Different from the white phosphorus shells made before, the current ammunition of the Wuhun Empire uses electric sparks to shoot electric sparks, and then detonate them, and the shells are broken at room temperature, and they will not explode directly.

Inside the shell, in addition to the gelatinous high explosive, which is a yellow propellant, there is also a primer.

Qian Fei'er took her right hand away from the mortar shell, put it on her chin, and groaned slightly.

Explosives will certainly not cause any problems, the function of explosives is to blast and destroy the target, and yellow gunpowder is not wrong, it is to ignite.

So, here's the problem......

Qian Fei'er raised her eyebrows.

On the primer and tail foil?!

Primer, one of the most important devices for shell ammunition, only with primer, the shell can be loaded with the shell, at the same time, the volume of the shell with gunpowder is larger, and the overall ammunition can be stuck on the chamber or chamber, so that it can shoot down at a depression angle.

The primer produced by Qianfeier's previous experiments is the primer with a firing pin and a general conductive primer, of course, the essence is an electric primer.

When applied to firearm bullets, the firing pin of the firearm strikes the bottom of the bullet, and the miniature primer at the bottom produces an electrical spark that ignites the gunpowder between the cartridge case and the bullet.

A small and violent explosion occurs inside the bullet, which instantly increases the pressure and "pushes" the warhead from the body of the bullet along the barrel.

The principle of artillery ammunition is the same, except that the firing pin is changed to a battery, and the circuit is closed when the rope is pulled to open the gun, so that the primer is overcharged, so that an electric spark is produced.

Qianfeier's new artillery is now being remodeled, and the pull rope connects two large springs, so that the circuit is closed for a split second and then bounced open by the spring, so that the circuit remains closed.

Doing so prevents some careless gunners from closing the circuit and not opening it, leaving the gun in firing mode all the time.

So, what went wrong with the current mortar shells, which is the primer?

Qian Fei'er squinted her eyes, and her eyes rolled slightly.

In the previous documentaries on TV, some mortars failed to fire, and the tail of the shell was indeed with a tail flame, and the mortar was called "cannon", not a grenadier, and the principle must be the same as that of ordinary artillery, which is not wrong.

So......

Qian Fei'er looked at the rear wing.

In some clips on TV, some GIs knock the tail of a mortar shell on the steel helmet of the head and throw it out, which can also explode, so it seems that the mortar shell of the Blue Star is a primer of impact......

Qian Fei'er thought in her heart, and with a movement of her right hand, she wiped the soul guide bracelet on her wrist, and took out a mortar to be tested.

Unlike the small mortar of 60 mm caliber just now, this mortar has a larger caliber of 90 mm.

Qian Fei'er's eyes fell to the bottom of the mortar, on the bottom pad.

Similar to howitzers, the mortar that Qian Fei'er asked Luo Fang to make is also relatively large and a little thick.

On the mat, the mortar was equipped with a small battery.

Yes, the mortar shells made by Qian Feier are ignited with electric current overelectricity!

Don't......

Qian Fei'er guessed in her heart, picked up the primer of the mortar shell, and turned it upside down to look.

From the small round hole at the bottom of the shell, Qian Fei'er can directly see the yellow gunpowder inside, and this small round hole is the hole where the tail flame is sprayed, and it is also the entrance for the EDM firing pin to reach into the ignition.

It's the wrong way to ignite!

Qian Fei'er came to a conclusion in an instant.

Knowing where the mistake had occurred, she directly put away the mortar on the ground, turned around, and walked in the direction of Heaven Dou City.

Later, Ning Fengzhi looked at it suspiciously, and while following up, he was a little puzzled.

Just gone?

Well......

It seems that I have figured out what the problem is, so I can go back and wait two more days to see it.

Thinking so in his heart, Ning Fengzhi's expression relaxed and followed behind Qian Fei'er......

After that, Qian Fei'er returned to Heaven Dou City, and after two days of repeated production and experiments, the experiment was finally successful.

The north of the Wuhun Empire, outside Tiandou City, weapon test range, afternoon.

The sky was a little overcast, dark, as if it were about to fall at any moment.

A cold wind was blowing in the north, blowing people's hairs and the blue silver grass on the yellow earth.

On the ground, the large areas of blue and silver grass that look like grass walls but are actually endless savannahs have become large areas of withered yellow.

This is caused by the season, the Wuhun Empire is located in the north, and it will gradually become very cold in the second half of autumn, coupled with the dry climate, the precipitation continues to decrease, and the blue-blue blue silver grass leaves will quickly turn yellow, dry up, and lose moisture.

In addition to the blue silver grass roots!

Unless it is a two-year drought, the blue silver grass will keep its roots green for the next year.

On the edge of the grassland, that is, in the shooting range, Qian Fei'er stood behind a small cannon of 60 millimeters, wearing a mink coat and mink boots.

This is a mortar improved by Qianfeier, the bottom battery is removed, and the pressure firing pin is used instead, and the tail is appropriately changed, and it will be slightly "deployed" when it becomes under greater pressure.

Looking at the mortar again, Qian Fei'er took out a small-caliber shell from the wooden box with shells on the ground next to it and put it on the top of the mortar barrel.

At the right point, she let go of her hands and immediately jumped into the nearby trench, bent over, and covered her ears.

"Poof!"

The mortar pushed against the bottom pad and the ground, and an illegible shadow flew out of the muzzle.

Moments later......

"Bang!"

A cloud of mud and rocks exploded in the distance, and many withered yellow blue silver grass flew into the sky without being blown into debris.

Qian Fei'er stood out from the trench and visually measured the distance of the explosion.

About four miles, huh......

Not bad.

Ning Fengzhi stepped forward from a little distance at this time, shaking the folding fan he often carried with him, while smiling gently.

"Congratulations to Her Majesty on the successful test of the new artillery."

"Hehe, then I thank Sect Master Ning for your congratulations."

Qian Fei'er replied casually.

Then, she tested several shells in a row, until the shells were finished, and she was sure that the problems of the previous two days would not be repeated, and then she put the mortar into her soul guide.

Put it away, Qian Fei'er spent a while, and together with Ning Fengzhi, she drove back to Heaven Dou City.

Back in Heaven Dou City, she had just entered the palace and walked for a while, when she saw a person.

This is a rather handsome man, with long silky silver hair on his head, and a light breeze between chuckles, looking leisurely and indifferent.

Time system martial soul, the owner of the Chronos Creation God martial soul, Shang Yue!

At this moment, Shang Yue was also wearing a thick mink coat and a pair of leather boots that were not very high.

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