The operation of the zombies upstream to bury the Nenjiang River continues. Although the speed has slowed down after being attacked by the artillery unit of the Self-Rescue Army, you still haven't negotiated! On the Nenjiang River, which is two kilometers long, the river channel continues to narrow.

Also, to verify if the zombies are really digging tunnels under their positions.

Chen Yuan also ordered Xiao Tengcan and them to test with the remaining dozen or so white phosphorus bombs.

They hit the zombie positions in different directions.

As a result, the effect of the white phosphorus bomb is really much worse than last night!

Of the dozen or so zombie positions that were attacked, the most zombies burned to death did not exceed 10!

Obviously, Chen Yuan's guess was right!

So Qin Cheng said regretfully: "I didn't expect the zombies' reaction speed to be so fast!" It seems that the second gift we prepared for the zombies will probably not have much effect! ”

Chen Yuan nodded and said, "Yes!" I'll tell Gedaqi to stop the action. But it doesn't matter, the weapon is not used, and there will always be a chance to use it in the future! ”

Qin Cheng also nodded helplessly!

In this way, the situation between the two sides continued.

The zombies continued to dig tunnels to bury Nenjiang, and did not rush to attack the Iron Castle. And the Iron Castle didn't do anything other than slow down the zombie construction with cannonballs.

Just looking at the less and less Nenjiang River, on the city wall, those soldiers who came from the Heishui settlement began to be silently careful again.

Then a day and a night passed!

At three o'clock in the morning of the next day, the current of the Nenjiang River had already dropped to the range of only 100 meters in the center of the river, and the deepest depth of the water was only two or three meters.

With such a low water level, and the speed of the water has been greatly reduced, it is no longer possible to wash away the zombies!

So while the Corpse King continued to fill in the Nenjiang River upstream, he couldn't wait to launch a new tentative attack on the Iron Castle.

This time, nearly 400,000 zombies, divided into east and west, launched an attack on the Iron Castle at the same time.

The human defenders on the city wall were suddenly shocked!

The zombies are coming all over the world! And soon washed up on the bed of the Nenjiang River, which had no water.

The ground here is so hard that even the thin layer of mud has been frozen.

So when the zombie stepped on it, he didn't feel anything strange at all, and the speed was still fast!

This made the corpse king overjoyed, and immediately controlled the zombie army to continue to advance!

Many officers and soldiers in the Blackwater Settlement couldn't help but start to be careful! Is it really going to be beaten by zombies this time?

However, the officers and soldiers in the Blackwater Settlement were obviously a little more careful, and the Corpse King was obviously a little early.

Because at this time, not all the riverbeds in the Nenjiang River are frozen!

Near the center of the river, where the water has just receded, the mud is about 1 meter deep, and only a layer of the surface is frozen. And the following part is not so fast to be frozen!

So when a large number of zombies stepped on such ground, they quickly crushed the frozen surface, and then sank into the mud at the bottom of the river, and it became difficult to walk.

The human defenders on the side of the Iron Castle were overjoyed, how could they miss such a good opportunity to beat the zombies?

Those slow-moving zombies stuck in the mud are simply the best practice targets.

At a distance of three hundred meters, although it was at night, with the high-powered searchlights on the city wall, the human defenders on the city wall could still calmly aim and shoot. Shoot zombies that are stuck in the mud and move slowly.

The Corpse King was immediately furious! It's really uncomfortable to be full of energy, but you can't do anything!

But the Corpse King can't give up so easily!

Unwillingly, it still continues to control the zombie army, stubbornly advancing in the direction of the Steel Castle!

It didn't take long for the zombie army to wade into the only remaining river in the heart of the Nenjiang River! And gradually submerged by the river.

But zombies don't drown, they don't need to breathe at all.

The water, which was much slower than before, really couldn't wash the zombies away.

So the zombies went underwater.

And with the protection of the river, the zombies are less likely to be shot by the human soldiers on the other side.

So the zombies rushed to the opposite shore under such circumstances.

But what can you do?

Due to the receding of the river, at this time, the shore on the opposite bank was still about 200 meters away from the wall of the Steel Castle!

And it's also covered in mud!

So the zombies, who still couldn't get rid of the mud, were once again sniped by a large number of human troops on the city wall!

In addition, the Corpse King also found that the zombies who had been soaked in water and mud quickly began to freeze on their bodies, which made their mobility even lower.

In addition, the Molotov cocktail that has been soaked in water is no longer usable! Only arrows, zombie bombs, and bone-shattering bullets can be relied on to suppress the firepower of the human troops on the city walls. Not even a javelin. Because the lower half of his body was trapped in the mud and couldn't use all his strength, the javelin couldn't shoot that far!

So after arriving here, the casualties of the zombie army have almost skyrocketed!

Although under the control of the Corpse King, the zombie army is already charging very desperately!

But more than ten minutes have passed, tens of thousands of dead and wounded, but they still haven't been able to get close to the range of 150 meters of the human city wall.

At this point, after thinking about it, the Corpse King finally chose to retreat!

That night, the 400,000 zombie army attacking the Iron Castle was shot and killed by nearly 50,000 human defenders on the walls of the Iron Castle. The riverbed is densely packed with zombie corpses!

However, at this time, the water of the Nenjiang River is still decreasing.

By daybreak, there was almost no water left on the surface of the Nenjiang River, less than 50 meters away.

And around noon that day, the Nenjiang River was finally completely cut off!

The two-kilometer-long river channel was landfilled, and it really couldn't flow a drop of water!

And in fact, at about 10 o'clock in the morning, the remaining little bit of water was already in the cold temperature and began to freeze. And completely lost the trace of living water.

It's just that at this time, the zombies are not in a hurry to attack again.

Because after the lesson of last night, the Corpse King also knew that even if there was no water in the Nenjiang River at this time.

But the silt on the riverbed has not yet completely frozen! It takes some time!

Until this evening, around 2 a.m.

The zombies secretly sent some zombies to the dry riverbed to try, and found that even the mud in the center of the riverbed was frozen very much, and the corpse king controlled the zombie army to attack again.

And this time, the zombie troops attacking the Steel Castle have become 800,000!

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(End of chapter)