In Ruixue City at night, a strange black and red fog appeared on the battlefield where the offensive and defensive sides were fighting, accompanied by the rapid maneuvering of each other's special forces, like ghostly claws at night.

The black fog is filled with toner and magnetic iron powder, which can weaken the high-energy particle beam attack in outer space at the same time, and cooperate with the strong electromagnetic interference pulser to maintain electromagnetic interference and radar interference against the enemy, so that the special forces of Iron Blood City can better hide in the dark night. It's like the black ink that a deep-sea squid spews out when it encounters an enemy, making it difficult for enemies in the outside world to see what is happening in the black fog.

The red mist is filled with a large number of tiny signal transmitters, and once adhered to the body by the red mist particles, those tiny red particles that can emit specific signals can make it easier for the pirate special forces to track the enemy's tracks. Once the enemy's tracks are revealed, whether it is an attack by the elite troops on the pirate side, or a scalpel-like precision point-to-point strike by a starship in outer space, the enemy will suffer an unbearable death crisis.

The closer you get to the city center defended by the defenders of Iron Blood, the more difficult it will be for the attackers' interstellar pirates to advance. Although many anti-aircraft hidden fortresses on the outskirts of the city have been uprooted, in this "whack-a-mole game", the offensive of the interstellar pirates has been blocked by an endless stream of "gophers" at a distance of 100 kilometers from the city center. As for the underground assault force of the interstellar pirates? Hey, it's a handful of bitter tears. The defenders of Iron Blood, who had the advantage of fighting at home, could tolerate the enemy occupying air supremacy and even relinquishing control of ground battles. But the defenders of Iron Blood City are the only ones who can't give up control of the underground war zone!

Once the interstellar pirates want to get their hands on the underground war zone belonging to the defenders, they will be met with the most tenacious and deadly resistance from the defenders! In addition, this is the home of the defenders of Iron Blood City, and even if the pirates have internal responses, it is impossible for them to clearly understand the complex underground world under Iron Blood City, which is like an underground labyrinth. What's more, the interstellar pirates had previously focused their research on Ruixue City, and the original plan was to conquer Ruixue City, the most difficult polar city in the Cave Star, with lightning speed through careful planning in advance. It's a pity that the plan is not as fast as the change, and the pre-preparations of the interstellar pirates have been in vain, and the primary target of attack has become Zuo Zhe.

Pillars of dazzling light that reached the sky and the earth quickly appeared in the dark night like the drumbeat of music, and erupted one after another rumbling thunder. Looking at the dazzling pillars of light in the sky like the world-destroying thunder punishment, Zuo Zhe, who emerged along the gap in the underground water pipe, and the solo mecha driving the pirate side was really shocked by this brilliant sound and light special effect. During the day, when the thick fog in the city and the sound of violent explosions are mixed, the supergod space loading system automatically turns on the silent mode. At that time, all Zuo Zhe could feel was the slight humming of the earth and the mecha due to the vibration. And at night when the dense fog in the city cleared and the stars turned to the other side of the cave star, Zuo Zhe, who had hidden in a relatively safe corner, really experienced the powerful scientific and technological power of this world.

The dark clouds over the city had been compressed around the center of Iron and Blood City, repeating in rapid condensation and rapid dispersal. The pouring rain in the center of the city was mixed with hail the size of beans, crackling and lapping on the surface of the devastated city center. The battle has now been fought, and all that remains of the buildings on the surface of Iron Blood City is the firepower fortresses that are stubbornly resisted under the energy shield. And on the periphery of these fire fortresses hidden under the huge hemispherical energy shield, the blazing white magma lakes were emitting intense white light, constantly emitting beams of high-energy particles outward in the dense bombardment of dazzling pillars of light between heaven and earth. In the face of these high-energy particle beams, which were much weaker and far less powerful than the sound and light special effects, the landed interstellar pirate troops were repelled again and again, leaving behind the wreckage of burning mecha in place. As long as the temperature is high enough, even steel can burn. At this time, the air on the surface of Iron Blood City was already filled with all kinds of unrecognizable smells. Under the influence of these special breaths, the small animals in Iron Blood City fell to the side of the street one after another, or suffocated or poisoned to death. Even the street trees on the side of the street showed signs of yellowing in the dust that filled the Iron Blood City.

The city center is certainly not to be visited, and it is heavily defended in the air, on the surface and underground. Even the most seemingly inaccessible underground is a vast array of vibration sensors and bombs. As long as these vibration sensors catch the abnormal vibration, even if there is no bomb planted in the area of the abnormal vibration, there will be ground-penetrating missiles rushing through!

In this way, the defenders of Iron Blood City are expressing a message to the attacking pirates, never thinking of invading the city's underground!

Unless, unless a strategic nuclear weapon is used! Even if an ordinary tactical nuclear bomb explodes underground, it will at best cause a certain range of earthquakes underground. The speed of the missile to penetrate the ground is relatively slow, and once the defenders find that there is a special missile that can penetrate hundreds of meters and still drill deeper into the ground, then it is a nuclear weapon! Ordinary missiles hardly possess the powerful ability to drill into the ground at a depth of hundreds or even thousands of meters! Why, because the cost is too high and the benefits are too small for conventional missiles! In the event of a hostile nuclear attack, the defenders will desperately resist and detonate it underground! Detonating it early will only cause a major earthquake underground, and if it can't be detonated early, it will be a good death!

Under the cover of high-end mimic coatings, the tiny Zuo Zhe, under the protection of the Terminator, quickly drilled into the defensive gaps on the outskirts of the city in the dark night. Cracking the identical friend or foe identifier on the side of the interstellar pirates, Zuo Zhe could clearly feel the location of the interstellar pirates around him. As for the unmanned aerial vehicles in the sky, even if the night vision devices of the unmanned aerial vehicles can peek through Zuo Zhe, which is almost the same as the surrounding environment, they will be invaded by the Terminator and tamper with the data screen.

It turns out that after having the Terminator, Zuo Zhe can be more daring, and he doesn't need to be bitten by a snake once and be afraid of the well rope for ten years.

In the middle of the night, reinforcements from Ruixue City had arrived in the iron ore mining area on the outskirts of Iron Blood City. Once here, the reinforcements from Ruixue City stopped flying close to the ground in the aircraft. Further on, it is easy to be spotted by interstellar pirate preset cameras and drones.