Song Le's sulfuric acid pool was ferocious enough, but it was even worse than the Commander of the Heroic Spirit's cracking method.

50 tall workers and heroic spirit guards jumped directly into the sulfuric acid pool, and used their bodies to squeeze out a large part of the concentrated sulfuric acid, and then the rest was also consumed by their bodies to corrosive.

Their constitution stats and HP stats far surpass those of ordinary Immortal Guards, and unless their bodies are corroded by concentrated sulfuric acid, they can still move, and even use their bodies to support other Immortal Guards.

It only took less than 5 minutes for Song Le's killing move to be completely cracked, and more than 70 firefighters and heroic guards successfully passed the concentrated sulfuric acid defense line.

At the same time, the Commander of the Heroic Spirit has also organized a third wave of attacks.

This time it was 100 Worker Heroic Guards + 100 Firefighter Heroic Guards + 300 Soldier Heroic Guards, the largest and most tragic attack to date, and the last attack of the day.

The Heroic Guards coming from the direction of the nuclear power plant traveled at different speeds, and it would take at least two or three days to gather so much.

If Song Le's side can prevent it this time, he will be able to live in peace for at least two days.

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The third line of defense arranged by Song Le is the mine defense line, and the main attack force is still the broadsword mine used before.

Wireless electronic communication equipment was banned, so the remote-controlled detonator was disabled.

However, the wired detonation is not affected.

For Song Le, who graduated from an engineering university and has been deeply involved in the field of automobile transmission for 8 years, he has developed a small factory with a few people into a large company with a market value of nearly 100 million yuan, which is not too pediatric.

He can even play more tricks if he wants.

But he didn't play those tricks, he simply made a hierarchical controllable initiation circuit.

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The broadsword mine was fixed on the simple lifting platform, Song Le pressed the first layer of the detonation switch, the guard plate opened, the lifting platform rose a grid, the guard plate was closed, and the five broadsword mines were detonated in turn with a time difference of 1 second.

The placement and angle of all mines are carefully calculated to perfectly cover the entire 10-meter passage, and there are no conflicts or blind spots.

At the same time, because it is wired remote control, safety, reliability and controllability have reached the point of perfection.

Each round of detonation of five broadsword mines, there will be as many as 3500~4000 steel balls, flying out at an initial velocity of more than 1200 m/s, sweeping all the space in front of the entire passage.

Even with the strong defense and endurance attributes of the firefighter Heroic Spirit Guard, these steel balls will be directly shot through into a hornet's nest.

At the same time, many steel balls will form ricochets after hitting the steel plate on the northeast side of the passage, causing serious injuries to the worker heroic guards who are hiding behind the firefighters.

Even if their physique attribute is strong, after such a round of attacks, they will completely lose their ability to move, or even be killed directly, and the end will be worse than those of their kind who jump into concentrated sulfuric acid.

Each round of mines can clear as little as 30 Heroic Guardians of various types, and as many as dozens of Heroic Guardians.

After 5 rounds, the third wave of 570 Heroic Soul Guards organized by the Immortal Commander suffered a staggering more than 1/3 of the battle losses.

What's even more frightening is that the broadsword mine platform set up by Song Le is still slowly rising, and it seems that there are countless killing weapons inside.

If it were an ordinary human army, such a battle loss would be enough to collapse an entire army.

If there were only Heroic Guards, they would continue to charge fearlessly until they were all killed, or they would have drowned the Broadsword Mine Platform with their corpses.

And now, these Immortal Guards were commanded by the Immortal Commander, and they neither collapsed nor continued to charge, but slowly retreated under the whistle command of the Immortal Commander.

They will return to the starting point of the attack and regroup, either choose to attack from other directions, or choose to join up with more Immortal Guards and finally assemble for a larger attack.

These two choices, no matter which one is chosen, are very sensible, and they will pose a very serious threat to Song Le's defense.

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Although Song Le used excavators and other tools to build a very strong defense line with the help of the mountain.

But that doesn't mean it's impenetrable.

The number of people is the biggest hole in his defense line.

No matter how strong the line of defense is, in the end, it is up to people to defend it.

And on Song Le's side, there are only seven people in total, including himself.

Zeng Xiaoxian, Lu Zhanbo, Lu Ziqiao and Guan Gu were sent by him to the passage and used sniper rifles to eliminate the enemy by name.

Chen Meijia and Hu Yifei were left, and Chen Meijia was assigned by him to a cliff defense line of more than 2,000 meters long, responsible for patrolling back and forth to prevent the enemy from accidentally stealing the back road.

Honestly, it's not very likely.

Beneath the cliffs are reefs and the deep sea, and there is nothing but the numerous, scalp-numbing mutant sharks.

Not to mention ordinary Heroic Spirit Guards, even the strongest Tyrant Guards, there is only the possibility of being torn to shreds if they fall.

However, Song Le didn't dare to take it lightly, after all, there were too few people on his side, and the personal strength of the group of 6 was insufficient, if they were really attacked by the back road, then there was a great possibility that they would be wiped out.

Hu Yifei was in charge of inspecting the defense line on the other side of the Maple Leaf Forest.

This side of the defense line is shorter, only more than 300 meters, but it is more critical because there is a greater possibility of being attacked by climbing.

As for Song Le himself, he was not idle, there was a 30-meter-high watchtower at the highest point of the Maple Leaf Forest Mountain, where he monitored the entire battlefield and operated various limited remote-controlled equipment by the way.

For example, the Broadsword mine detonation platform in the middle of the passage.

There are a total of 7 people, and they also perform their own duties, as long as the Heroic Spirit guards are smarter and attack at the same time from other directions, instead of being hooked by Song Le like this, they will definitely have a chance to break through the defense line.

At that time, Song Le's side was destined to be defeated individually, and then the entire army would be destroyed.

Even if they retreated to the second, the Heroic Spirit Guards did not fight with Song Le, and adopted the tactics of harassment on the side, which was enough to drag Song Le's side down.

Even if Song Le and the others were strong enough to drag on for a few days, they would be able to easily take down this seemingly strong fortress when the elite guards and tyrant guards behind came to converge.

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This Heroic Commander is indeed smart, and he also knows how to advance and retreat, and if he were an ordinary person, he might be planted under its means of retreating as advance.

But Song Le was not an ordinary person, his cautious personality allowed him to take one step at a time and see ten steps, and he was also prepared for the means that the enemy might use after ten steps.

Since he could be so thoughtful and prepared, how could he not have imagined the possibility of Commander Heroic Soul retiring from the army?

Naturally, I want to get it.

"Want to run? No way! ”

Song Le sneered, and then pressed the start switch in his hand.