After the order to open the barrier force field was issued, Qiao Lu immediately contacted Wang Lei, who was still commanding the battle on the city wall, and said:

"Wang Lei, we're going to open the barrier force field on the ground, what's the situation on your side?"

Looking at the dense insect tide crawling outside the barrier, Wang Lei replied honestly:

"It's not good, it definitely won't last long!"

The pulse rifle in Wang Lei's hand continued to spit out blue tongues of fire, knocking down the jumping insects that climbed on top of the barrier force field like autumn wind sweeping leaves.

However, it seems that the number of insects has not decreased at all, and a gap has just been opened in the swarm, and in the blink of an eye, it has been filled by the jumping insects that have surged up from behind, and it has not given the slightest respite.

The Gauss rifles in the machine gunner's hands had already burned red from overheating, and the continuous attacking swarm gave them no chance to stop shooting to cool the barrel, and they could only shoot frantically as if their fingers were welded to the trigger, and immediately replace the next gun and continue firing when the chamber exploded.

Qiao Lu also knew that this would bring great pressure to the ground troops, but in order to avoid the overwhelming Zerg Air Force from driving straight into the sky and directly threatening the Shanghai No. 1 engine where the keystone was located, he really had to make a trade-off.

He said to Wang Lei: "Please hold on a little longer, and then we will use nuclear bombs to clear the field and cover your retreat!" ”

The Wandering Earth is not without the use of nuclear bombs, the 10,000-seat planetary engine cannon is essentially a nuclear cannon, and it is still continuously firing at the hive fleet, so that the Leviathan, the flagship of the Queen of Blades, does not dare to approach rashly.

At the same time, missile silos around the world are raining nuclear bombs into space, detonating in orbit over the wandering Earth to stop the landing of the swarms.

The fireballs produced by the thermonuclear explosion were like countless stars lit up and then extinguished in the dark night, destroying a large number of dragons and airdrop bags directly outside the atmosphere of the wandering earth.

Even so, just as infinity divided by two is still equal to infinity, even if more than half of the airdrop bags have been intercepted in the universe, there are still an overwhelming number of alien insects that have successfully landed on the wandering earth, and the swarm seems to be so endless.

As long as the hive fleet has not been destroyed, no matter how many times the ground is washed with nuclear bombs, the swarm will come back countless times, even stronger than the wave.

Thunderbeasts with thick skin and thick skin, as well as cockroaches that move in the ground, cannot be destroyed with a single nuclear bomb, so even if you continue to bomb with nuclear bombs, you can't completely stop the attack of the swarm.

For this reason, on the ground, nuclear bombs are only used when the troops are shrinking their defensive lines, or when there is a real existential crisis, which of course no one wants.

"Countdown to barrier opening, 3, 2, 1-"

When the countdown ended, the barrier force field suddenly rose from the ground, just enough to reach the height of the Shanghai fortress wall.

This made the insect swarm that was originally blocked outside the barrier pour in like a tsunami, and slammed into the thick walls of the Shanghai fortress, and a large number of jumping insects struggled to climb up the wall like waves, trying to directly cross this line of defense.

In the blink of an eye, the first jumping insect appeared on the top of the protective wall, although it was immediately beaten into a sieve by the surrounding soldiers, but then the insect that surged up was out of control.

Wang Lei ordered: "Keep in line, keep shooting!" ”

The human troops on the city walls immediately organized a new line of defense, lined up in a column to shoot at the jumping insects that climbed up, and used flamethrowers, gravity sprays, particle cannons and other weapons to stop the surging insect tide.

Some of the jumping insects that climbed the city wall were beaten by the rain of bullets and turned into sieves, some were cut off by particle beams and swept down, and some were first gathered together by gravity, and then burned by the churning flames to the point that there was no slag left.

Since only the jumping insects can climb directly up the towering city walls, with their strong firepower, the wandering earth is still able to hold the city walls and use the giant cannon on the wall to continue to bombard the insect swarm outside the barrier.

However, after the arrival of the Thunder Beast, this copper wall could no longer stop the swarm.

I saw the huge thunder beast running at high speed like a living siege vehicle, and charged towards the protective wall of the Shanghai fortress without stopping.

Every step it took shook up a large cloud of dust on the ground, leaving footprints that were larger than dinosaurs. The dense swarm of insects consciously made way for it, and the jumping insects that couldn't dodge it would even be trampled to death, no different from stepping on an ant.

The Thunderbeast swung its monomolecular blade and slammed into the wall like a mad bull.

At that moment, it was like Mars hitting the earth, and the debris splashed from the city walls fell like a meteor shower in the city of Shanghai. The city wall tens of meters thick was directly knocked into a large hole, and the thunder beast rushed straight out of it.

The shock from the impact spread like an earthquake throughout the walls, but fortunately it was not enough to collapse the heavy protective wall, and the human forces on top were still struggling to fend off the jumping insects that climbed up.

It's just that after being hit by the thunder beast to open such a gap, the surging insect tide suddenly poured into the Shanghai fortress like a dam bursting its embankment, and cooperated with the alien insect troops transported by the tunnel insects to launch an even more frantic attack on the urban area of Shanghai.

There was more than one breach that had been knocked open, and the rest of the thunderbeasts had followed suit and used their monomolecular blades to dig a tunnel out of the city wall, making the influx of insects even larger, threatening to flood out of control.

The point of holding the wall now is to keep the cannon above to continue to bombard the swarm outside, at least to slow down the attack of the swarm a little.

It's just that the huge thunder beasts have already begun to rampage through the city of Shanghai, and everything in their path is in ruins, even the heavy city walls can't stop their charge, and the fortifications in the city can't slow down their pace.

These terrifying behemoths don't even need to think about the complicated terrain of street fighting, even if they rush to the front, any building will collapse under their impact, and force a way out.

If they continue to wreak havoc in the city, I am afraid that the entire defense line will be broken, and the swarm will immediately rush to the Shanghai No. 1 engine, where Keystone is located.

However, watching this group of thunder beasts rushing straight into the urban area of Shanghai, Qiao Lu showed an expression like a prey breaking into a trap, and muttered to himself:

"Looks like it's time for the Monster Hunters to make their debut."