In Silver Dragon City, the commander-in-chief is Niya, but the real operator is the unknown Li Xian.

There is no other reason!

Because Silver Dragon City was built by Li Xian himself.

The design drawings and intelligent brain programming of Silver Dragon City, as well as the actual operation of the nanorobots, were all done by Li Xian.

In this Silver Dragon City, the installation of every piece of equipment, the placement of every fort, the configuration of every machine gun muzzle, the angle of the fire network...etc., are all under Li Xian's control.

Because of this, no one is more familiar with the defense of this city than Li Xian.

Niya is well aware of the characteristics of trusting people without trusting others, so he directly handed over the control of the city to Li Xian, allowing Li Xian to do his best, while Niya himself did a good job of intermediary and dispatching personnel work.

The two were old teammates of the Bloodfang Team, and they had a tacit understanding of their cooperation. At this time, they relied on each other and worked well together.

If it was just the tacit understanding between the two, it would definitely not be enough to withstand the enemy's attack.

In Silver Dragon City, there are thousands of human slave warriors trained by Song Ziyu and an equal number of zombie tribes that can be mobilized.

These powerful forces are the strength of Niya and Li Xian.

certainly!

Li Xian's greatest confidence is Silver Dragon City.

This city was built by nanorobots using cutting-edge technology. Song Ziyu spent a lot of contribution points to redeem it from Xihe.

It was precisely because of the shelter of this city that Niya and Li Xian were able to remain calm and collected under the sudden attack of the enemy.

Under Li Xian's operation, Silver Dragon City's defense was impregnable.

…

Fierce gunfire plowed the ground directly in front of them. With the dim light on the ground, the mutilated corpses of the killed enemies could be vaguely seen.

"Are you kidding? Do you really think that the Vulcan cannon is a vegetarian? This thing can be put into a refrigerator by an elephant!" Li Xian operated the optical brain in front of him and maximized the role of the artillery defense system on the city wall.

The operation panel in front of him is like a beach landing mini-game. The clear strike site and the amount of automatically loaded ammunition, as well as the silky-smooth instructions for using the body and arms, make Li Xian's battlefield command like art.

This guy actually had the time to joke with Niya.

"Don't be careless. After all, our opponents are time travelers like us. It shouldn't be possible for them to have only these two brushes."

Niya is far less optimistic about the battlefield situation than Li Xian.

As the saying goes, only by knowing yourself and the enemy can you win a hundred battles.

After realizing the identity of the enemy, Niya felt that the frontal attack must be just a feint.

But Li Xian obviously did not have this sense of crisis. He just said lightly: "Miss, don't worry, with the defense system of Silver Dragon City, no one will be able to do anything..."

Before he finished speaking, the optical brain in Li Xian's hand sounded an alarm.

Li Xian looked at it intently, and then sneered: "Damn guys, they actually came to attack the east and west! These guys are pretending to attack the east wall, but they are actually preparing to climb over the west wall!"

After hearing this, Niya immediately said: "Fortunately, I still have a reserve team in hand, let them go up?"

"No need!" Li Xian sneered: "I have already guessed such an incident, so the west wall has already been prepared."

The confident Li now made some operations with his brain, and then the entire west wall immediately erupted with a terrifying blue light!

Seeing this scene, many people were stationed on the city wall

Everyone was dumbfounded.

Niya also showed an incredible expression: "This is..."

Accompanied by the terrifying thunder and lightning, all the enemies who climbed the western city wall were electrocuted to the point of being burnt on the outside, and rolled down the wall one after another, smashing into pieces.

"I have built-in electric shock capacitors on the city walls. These electric panels rely on solar energy accumulated during the day, and the electric energy that instantly bursts out can reach millions of volts. When Pikachu comes, it will be electrified into a stupid mouse." Li Xian told Niya.

It is generally said to ask for credit.

"How could you even think of doing this?"

Niya was shocked by Li Xian's genius idea and couldn't help but ask.

Li Xian sighed and said: "Actually, this move is not prepared to defend against humans."

When Silver Dragon City first began to build the city in the past, the city was far from the scale it is today, and it was not equipped with these high-tech means.

Then Silver Dragon City encountered a raid by the Gangro clan. Thanks to Song Ziyu's bravery, he killed the attacking zombies, otherwise he would have suffered a big loss.

When conditions allowed for funds to be in place, Li Xian learned from the experience and came up with such a power grid device.

I didn't expect that this power grid has not been used against zombies yet, but it has done a wonderful job!

"How about it? Is my method good?" Li Xian was proud and showed off to Niya.

"Li Xian, you're amazing. I can't tell you are a good planner." Niya couldn't help but praise.

A crisis was eliminated in the blink of an eye. Li Xian felt that compared with Zhuge Kongming, he was probably slightly better.

However!

Just when Li Xian was feeling complacent, a sudden change occurred.

A terrifying green sword light lit up between the sky and the earth, and then slashed on the west city wall.

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br> Then several cannonballs with high energy levels hit the city wall.

The rumble was earth-shattering!

The earth trembled and the mountains shook, accompanied by rolling rocks, which almost caused Niya and Li Xian to roll down the city wall.

When the dust cleared, Niya discovered in despair that a huge gap had been created in the west wall of the city.

"Grandma, I didn't realize that there is high technology on the other side." Li Xian got up from the ground with a mouth full of dust and patted the gravel on his body.

Niya was also a little annoyed!

I was still careless, knowing the origin of my opponent, I should have been prepared for a plane war long ago.

But he still didn't take it too seriously.

Since you can bring technology from the source world to this world, why can't your enemies do the same?

"Ready to fight!"

Niya hurriedly issued orders to the generals around him to prepare to fight the attacking enemy.

At the same time, the earth shook and the mountains shook again, and a huge metal mecha rose from the ground in the darkness!

This thing withstood intense artillery fire and launched a brazen attack on the west wall.

In front of this alloy mecha, the city defenses that Li Xian was proud of were like paper and were immediately destroyed.

As the mechas invaded the city, fierce street fighting broke out.

Although there were already defenders in Silver Dragon City, these human defenders found in despair that the enemies they faced were not just enemies, but also a large group of mechanical combat units armed to the teeth!

"Hmph! It's not just you who have technology to support you! I'm not a primitive man."
Chapter completed!