In the sky, these giant golden eagles with a wingspan of more than ten meters are well-deserved air overlords in this world.

In the sky of this era, so far, these big birds have no natural predators.

So these guys didn't even think that the people on the ground could attack them.

But by the time I saw the two black dots flying over, it was too late to dodge.

The fire@arrow@bomb quickly flew near the flock, and then exploded directly with two 'booms'.

In addition to rocket thrusters and silver iodide, this rocket is also equipped with a hand-built timing device from Grande.

Yang Yinuan didn't know how to do this thing, anyway, he just provided a few electronic watches.

Then Grande tinkered for an afternoon, and it was done.

The two rockets exploded accurately in the air, and the silver iodide contained in the warhead exploded in all directions with a dazzling light.

The scorching stream of metal knocked the big birds off guard.

What's even more terrifying is that these silver iodides absorb a lot of heat in the air and then turn into countless silver iodide particles.

Eventually, the water vapor in the air will condense into ice crystals......

In other words, it's the chemical that absorbs a lot of heat from the surrounding area.

As a result, around the center of the explosion of two rockets, the temperature plummeted.

Even those big birds that weren't hit by the rocket fragments would get frostbite from the freezing effect of the sudden drop in air...

At the center of the explosion, at least ten large birds, were killed on the spot.

The rest of the body was immediately covered with a thin layer of ice, and it suddenly changed.

But these big birds don't understand it at all, even if they still have a controller on their heads.

At this time, the fear of the unknown in their bodies also took over, and at this time, the high power on the ground gradually lost control of these big birds......

At this time, Gao Qiang, who had already returned to Midtown, saw this picture, and suddenly a mouthful of old blood spurted out directly without holding back.

These big birds are his most important killer feature!

Over the years, just searching for the eggs of these golden eagles has made me wonder how much work has been wasted.

Then I have to start raising it from a young age, and then start to boil the eagle after raising it, and the effort spent in this can be imagined.

Some time ago, there was a breakthrough in the research and development of his third sister, and he was able to control so many eagles at one time.

At this moment, he looked at the cauldron-like antenna equipment next to him, and he really wanted to smash this thing with one punch.

But after thinking about it, I still quickly urged my mind to control the retreat of these big birds......

He didn't want these air legions in his hands that could have been rampant in the sky to be killed on the battlefield for the second time.

This pair of strong sense of defeat is a conceivable blow to Gao Qiang, and he vomited three mouthfuls of old blood on the spot......

And now that there is no air threat, the shooters of the catapult are even more crazy.

In just ten minutes, tens of thousands of clay pots were thrown onto the walls of the Iron City.

At this time, from a distance, you can only see that the entire iron city has been shrouded in yellow-green smoke.

At this time, Gao Xin, who was standing behind the Thousand Mountains Army, who was in charge of reconnaissance and plundering the formation, looked pale.

"Brother Yang, how can you still have such means?"

Looking at the yellow-green fog on the city wall, Gao Xin was trembling......

At this time, Yang Yinuan had already sent two drones and flew towards the city wall.

He wanted to see what was going on with the defenders on the city walls!

In fact, if you want to say how toxic this chlorine is, it is not that much.

The main role of this thing is to deter and intimidate.

After all, in such an open and open environment, it is impossible for him to poison people to death with his density of chlorine.

At best, it can temporarily incapacitate some soldiers.

After all, the killing principle of this thing is to rely on the combination of chlorine gas and human body water to produce hydrochloric acid.

It then leads to redness, swelling and stinging in the eyes, tingling in the respiratory tract and so on.

Only in extremely high concentrations can it lead to problems such as pulmonary edema, bronchial edema, spasms, etc.

But in this empty environment, it's not al...

But the biggest headache for him now is that although he brought 'poison gas' this time, he forgot to buy gas masks for his soldiers...

This has to be said to be a big mistake this time.

So at this moment, he could only let the troops start to move forward slowly, waiting for the smoke to clear before they began to climb the wall.

As for the movie, let the soldiers, put a layer of water-soaked masks on their faces and go up to charge.

That's.

After all, the biggest killing effect of this chlorine gas is that it turns into hydrochloric acid when exposed to water.

Therefore, when encountering this poisonous gas, it is most important to stay dry.

At this time, you still put a wet cloth on your face, this is simply looking for death, waiting for a bad face!

So at this moment, Yang Yinuan ordered his soldiers to push the ladder cart and began to slowly approach the city wall.

But he was not in a hurry to climb the wall, because he also knew, even if he waited until the chlorine gas was gone.

The defenders on the wall could not recover for a while.

Even if this chlorine gas can't directly kill too many defenders, the terrifying effect of this thing can't be dissipated in a while.

The wounded who kept coughing up blood and blistered with blood on their faces brought about by this poisonous gas were the most lethal results.

Seeing such an unknown injury to the comrades-in-arms will bring an indelible psychological blow to the soldiers defending the city.

This is the greatest advantage of asymmetric warfare!

I can do a dimensionality reduction blow to you in a way that you don't understand at all.

It doesn't have to cause too many casualties, but it can break your army's heart!

At this moment, their vanguard had slowly come to a place about a hundred meters away from the wall of the Iron City.

At this point, the siege force began to slow down, because by this time they were already in front of the moat.

This moat has recently been widened.

So if you want to cross the river, it's not so easy.

Fortunately, it was Yang Yinuan and Grande who led the attack on the city wall this time, and they did not use the stupidest method adopted by the army in this era to fill the river.

The method they did was to build several pontoon bridges.

When they reached the river, there were sappers who jumped off the icy river and swam desperately to the opposite bank.

These sappers, but they were 'self-motivated' guys that they had carefully selected from the prisoner camps.

Recently, these captives have followed them to fight in the north and south, and they have seen the strength of Thousand Mountains City.

In addition, they also found that this Thousand Mountain City did not abuse the prisoners.

Even the treatment of them as prisoners is better than the treatment of private troops in many city-states.

If nothing else, just talk about food and drink, which is more than twice as good as when they were soldiers before.

Naturally, many people are tempted by this!