"Sit down!"

Sun Tan accelerated the speed in the direction Mark just said. The spacecraft suddenly lowered its height and was flying almost against the ground. Obstacles such as signal lights hit the two wings of the spacecraft. Fragments of various debris floated in front of them, and their vision suddenly became messy and crowded.

Such an extreme flight method tests the stability system of the spacecraft. This alone makes the fighters of Xingyao City far beyond the reach. After shook off a group of followers, Sun Tan pressed the trigger on the operating rod, and an attack star appeared on the screen. The unmanned fighter arranged on both wings opened fire quickly. The dense high-energy laser attacked and opened the metal plate on the ground. The ground destroyed by high temperature burned a bright fire. The edge of the metal was bombarded with a circle of red holes.

The spacecraft rushed into the ground from the thrust with an unstoppable momentum. This move stunned the pursuers behind. The thrust was just a little bigger than the spacecraft. This accuracy was shocking. If it deviated a little, it would directly hit the ground. Even if the structural strength was high, it would crash at that speed.

"What should we do, Colonel...will we still chase after you?" The pilot in a fighter jet hurriedly used the communication to report.

"Nonsense, do you know where is below? Why are you still waiting if you don't chase it?"

"But if there is a war inside, the facilities inside will be destroyed..."

"We must intercept the enemy before it reaches the core! If you dare to have something wrong, you will die!"

“Yes…yes.”

After receiving the order, the fighter crew had no choice but to chase Mark and their spacecraft into the ground. Their flexibility was not a little worse than the spacecraft. When they chased them, they crashed four or five of them.

The underground environment of Xingyao City is complex. After several transformations over the past two centuries, the huge supporting structure is as crowded as a honeycomb. Giant steel beams with a diameter of dozens of meters are crisscrossed. Some structures will change with the movement of the entire space city. Flying in such a place is simply a suicide.

Sun Tan drove the spacecraft and rushed to the front. After entering the complex environment, the gap in technology became even more obvious. The performance of the aircraft was a little different, and the strength it showed was much worse. The density of the fighter fleet that was originally chasing was much smaller, and the crowded flight space slowed down their speed. In this case, there were few people who could still keep up. Sun Tan did not have to worry about whether he would fight them.

Several small flight detachments tried to take a detour to attack Sun Tan from the front, but the fighter jets responsible for interception did not dare to use heavy weapons at all. This underground facility not only had important steel beams supporting the ground, but also many energy pipelines and oxygen hubs. These equipment were very easy to be damaged, and once damaged... the cities above would suffer, especially those important oxygen facilities. Once they were destroyed, they would not even be able to repair them, and millions of people would die of hypoxia within a few hours. The intercepting teams kept attacking with machine guns mounted on the fighter planes. Not to mention the hit, it would not be painful for Mark and their command ships.

"Just in front, this is marked on the design drawing." Mark vaguely recognized their location. It was like a huge steel maze below. The light was dimly lit in the underground of the city, and there were no signs or references. It was difficult to determine his location just by just a rough structural diagram.

Fortunately, Mark was lost in the maze of thinking for a long time. His experience during hibernation made him very different. Now his spatial memory ability is far beyond ordinary people and he can judge his approximate position.

"There should be no mistake. The collision orbit is the central framework of Xingyao City. No matter how many times it has been rebuilt, it will not change this important structure." Sun Tan opened the detector at the front of the spacecraft. The detection range of this spacecraft is much larger than that of the enemy Xingyao City. In such a dark and crowded environment, intelligence is particularly important. If you can see some environmental advantages, you will be much greater, so they can get rid of the enemy so quickly.

Compared with the huge structural pillars next to it, the spacecraft is as small as mosquitoes and flies. Few people will enter the space here. There are only cables used by some maintenance personnel, and there is not even a road that can make people walk. Although the large pillars of special materials are old, they do not have any rust. The surface of the metal is matte like aluminum. It gives people a sense of wonder in the darkness, as if they are diving in the deep sea. Those pillars are spears in the hands of giants, one by one piercing from the sea and intertwining them. The spacecraft passes quickly between the black spears, and the giant pillars seem to be shaking slightly. Mark doesn't know if it is an illusion caused by the dark environment. From the porthole, it can't see the entire picture of a pillar at all. When they pass by one side of the spacecraft, Mark feels that it is a huge wall.

Mark's intuition was indeed correct. After pushing forward for a while, the huge city core really appeared in front of them. It was a circular reactor core that was larger than all giant pillars. The material it used was obviously different from the giant pillars. The surface was shining with a brass-like metallic luster. A large number of pipes were connected from all directions. From this point of view, it really looked like a big heart.

The artificial sun inside the giant sphere is constantly jumping, generating majestic energy through violent fusion of nuclear dynamos, and then transported to every corner of this space city, every building, every car, and every light on the ground is driven by it.

"It's over." Sun Tan's lips raised slightly, pressed the button of the joystick in his hand, and the attack sights on the screen gathered together, and the dangerous red sights gathered into one point, followed by a loud explosion.

The Gauss cannons mounted on the spacecraft fired several guns, bombarding heavily on the outer wall of the "heart of the city". The brass-colored surface was torn apart, revealing the shocking dents below.

"Wait, why did you just fire? It's so dangerous!" Mark exclaimed.

"Don't worry." Sun Tan waved his hand, looking indifferent, "Just scare them. This amount of firepower cannot even be broken, but they dare not act rashly."

After Sun Tan attacked for two rounds, a harsh alarm sound came from above. The alarm lights flashed constantly. The dim space just now was illuminated blood red. The fighter jets chasing them all the way came late and arrived with the defense forces. Sun Tan stopped moving and hovered the spacecraft in place.
Chapter completed!