(Today's fourth update, please collect it. I have lost more than 30 of my collections in the past two days. A few days ago, everyone scolded me for keeping the collections rising. Since the second volume was updated, I have been losing my collections. What's going on? Do you still want to watch the protagonist's emotional scene? You'd better leave a message. I'm a little worried when I write this way, and I'm so scared that I'm so scared.)

As Ida continues to take off, Ling Feng is becoming more and more shocked by this mechanical city.

The entire castle's conifer slowly appeared in front of Ling Feng and the others. Although they could not see the distant part, it was what they saw, the steel-like city walls and countless interlaced metal pipes and buildings, making the city look weird and technological.

What surprised Ling Feng the most was the passages interspersed on the city walls that looked like the take-off entrance of the fighter plane. Although they were all blocked, Ling Feng still recognized the pictures of the planes.

Moreover, the entire city is like a military fortress, with countless defense facilities installed in all directions, including various barrel barrels that Ling Feng could not recognize. Fortunately, these facilities did not open fire at the two of them.

"Look, there is an entrance and exit with a cabin door open there, and we go in from there!" Ling Feng suddenly found that not far from the upper left of the two of them, an entrance and exit that also has an aircraft takeoff device was not closed.

When Ida heard this, she also found the hatch and flew carefully towards Zhi.

When they arrived next to the hatch, Ling Feng and Ida did not dare to face the hatch head-on, but lay outside the hatch and carefully looked into the hatch, only to see endless darkness inside and nothing could be seen.

"Get in?" Ling Feng raised his head at Ida and signaled.

Ida nodded, and the two of them passed by at the same time, and stood in the hatch.

"Is it really no one? Judging from the appearance of this city, it seems that it has become extinct, but it is hard to say that the fighter planes and intelligent warships just now appeared, and it is possible that one or two people will appear now." Ling Feng seemed to be talking to himself, and seemed to be talking to Ida.

A ball of flame appeared in Ling Feng's palm, and immediately illuminated the hatch. Then, Ling Feng and Ida carefully, tiptoed and slowly moved towards the depths of the hatch.

Along the way, Ling Feng and Ida were extremely cautious, afraid of making any loud noises. While observing the surroundings, they looked for the passage inside. Soon, the two found an abandoned fighter plane, staying on the hatch track. Then, the two continued to go deeper, and not long after, they found a staircase leading to other rooms, carefully stepped up the stairs, and came to a metal door.

Ling Feng pressed his ear to the door and felt a coldness coming. He didn't hear any noise in the door. Then he carefully checked how to open the metal door.

"There is no latch, no lock, and even no password or identifier. How can this door be opened?" Ling Feng looked around and couldn't help but cursed in a low voice.

Ida stepped forward and looked, saying, "This should be a door directly controlled by the internal system of this city, and it does not require any manual operation."

Ling Feng patted his forehead: "So, the system of this city has stalled, that is, this door cannot be opened?"

Ida's somewhat metalized longan blinked and said, "After the system stagnates, there are two possibilities. One is that this door will never be opened and can only be destroyed with force. Generally, this door will be used in the main door, the storage place of important items, etc. The other is that this door can be opened directly and easily without any operation. Generally, this door will be used in various safety channels and places that are conducive to counterattack. Obviously, this is the channel for fighter jets. Once someone attacks the city and destroys its system, then, can the door of this fighter cabin be opened?"

Ling Feng's eyes lit up: "So, people in the city must need to use this fighter to fight back, so this door will definitely be opened!"

Ling Feng pressed his hands on the door and pushed it inside without pushing it open.

"Hmm?" Ling Feng glared at his eyes, and he increased his strength again, but he pushed hard but still couldn't push it away.

"What's going on? Can't this door be opened? It shouldn't be?" Ling Feng was speechless and suddenly exerted force again. Even the strength of taking milk was used, but he couldn't push the door open.

"Damn! What speculations are all fake!" Ling Feng kicked the door angrily, and then turned around to question Ida, but he didn't expect that the metal door that could not be pushed open was actually kicked by Ling Feng like this, and he slowly opened towards Ling Feng.

"" Ling Feng was speechless. It turned out that this door needed to be pulled! The direction was wrong!

Ida looked at Ling Feng's embarrassing look and couldn't help but secretly hooking his huge dragon mouth.

The flames in the palm of his hand were ignited again to illuminate them. Ling Feng and the others first looked at the situation inside the door. After confirming that nothing was wrong, Ling Feng and Ida walked slowly in.

This is a relatively small room, only four or five square meters, with some messy drawings that Ling Feng couldn't understand and all kinds of scrap copper and iron that he had never seen before - it was actually a tool, but Ling Feng didn't recognize it.

On the other end of the room, there was also a metal door. Ling Feng, who had learned the lesson just now, first pushed it, but the door did not open, and then pulled it to himself - the door opened.

Looking inside again, the two found that this was a very huge room, dozens of square meters, and the walls of the room were full of screens of all sizes, but they were already dark at this moment. On the ground, there was a small metal table in the middle of the room, with some messy file tools piled up on it; and around them were some computer-like instruments and various buttons.

"Is there a light?" Ling Feng couldn't help but ask. Although the two of them could see clearly with the help of the flames in their hands, Ling Feng was still not used to this dim light. It would be great if the lights in this room were on.

"Bang!"

With a light sound, the whole room suddenly became bright, and a bright white light came from the roof of the hall, and everything in the hall suddenly became clear.

"Damn, let's talk about lamps, just lamps!" This scene directly shocked Ling Feng and Yida.

"Is there anyone?" Ling Feng murmured.

"In addition to those two fighter jets and smart warships, does this city still have enough energy to illuminate? And it can also suddenly turn on the lights according to our appearance? Could it be that there are really people in this city?" Ida also looked around, but there were no one else in the entire hall except for two people?

"Invaders appear, super intelligent robots are dispatched to eliminate the invaders!"

Suddenly, an ugly electronic synthesizer sounded in the entire hall, just like the sounds the two of them heard outside the city before.

“Woo~”

The sound of metal friction came. The two of them turned their heads and suddenly found that the metal door next to the hall was opened. Four identical silver-white robots, almost two meters tall, ran out inside!

Each robot's left hand is in the form of three barrels, the right hand is holding a long sword, with a metal helmet on its head, and a silver-colored device on its body. Its joints are extremely flexible, and it looks not much different from humans!

"The invader must die!" Before Ling Feng and the others could react, the four robots made an unpleasant electronic synthesizer sound at the same time and rushed towards Ling Feng and the others.
Chapter completed!