Boom Boom Boom Boom ......

The ground trembled, and a wall made entirely of massive stones slowly rose from the ground.

There were already two huge stone walls on the ground, which quickly approached the newly raised wall, and the three walls quickly merged together to form a solid siege.

Soon mottled marks appeared on the city walls, and signs belonging to Udu quickly emerged.

Beneath the walls, several men in black uniforms stood on top of the circle, arms raised, and performing magical powers.

There were only three people, and with the help of the magic circle, in less than twenty minutes, the huge city wall appeared.

Immediately after, the light of the other circles lit up, and steel quickly covered the wall, enveloping the entire wall.

A huge war machine slowly descends from a high-energy transport plane.

The high-energy crystal transport aircraft developed by the consortium has a powerful ion thruster that the old world did not dare to imagine, and the powerful propulsion formed by the ions released per second is many times more powerful than the fuel thruster.

The stream of strong particles makes no noise, and the sound of a huge flying machine speeding overhead is barely audible.

Rumble! The huge high-energy cannon fell, making a muffled sound on the ground.

Immediately after, I don't know how much metal floated up and quickly wound.

In a few moments, a huge artillery base eight meters tall and shaped like a pyramid was cast.

On the pedestal, the huge high-energy cannon was aimed at the distance at an angle of thirty degrees, indescribably powerful.

With the appearance of the city walls, a large number of soldiers were quickly put into position.

In less than two hours, a mountain that had just become a barren mountain had become a small artillery base.

There are a total of seven such bases in Chencheng, and they are all aimed at the largest gap in the mountains around Chencheng.

Of course, ground power alone is not enough, and air force must be equally strong.

Inside the outpost, dozens of surface-to-air laser cannons are already in place.

Xia Lu jumped off the airship.

The airship landed, and Chang Feng and Chang Xin also came down.

Immediately several officers came over to salute the two men and began to report to work.

After listening to the other party's return, Chang Xin turned his head to look at Xia Lu, revealing his signature gentle smile.

"Mr. Xia, how do you feel about our layout?"

Compared with materials, no one has ever fought Wudu, whether it is civilian or military, all kinds of alloys with extremely high forging difficulty can be manufactured in Wudu.

Therefore, all the slightly built in Udhu are more elaborate than the other bases, and even luxurious.

Xia Lu didn't answer, but walked around a little bit with his hands behind his back twice.

"There is no need for a city wall, fighting xenos is like playing chess, they will scout your defenses in advance to specify an attack strategy, you erect a wall here, they will know that you are a defensive watchtower."

"Moreover, although the wall is high, it can't create much resistance to the xenomorphs, but it can reduce our attack range, and it is also a trouble for personnel to enter and exit, and if you want to deal with the xenos, you must open the door, showing your confidence inside and out, showing your confidence, which will make the xenos weigh it more."

Xia Lu pointed to the city wall and said his opinion.

Immediately after him, he pointed to the cannon and said, "This cannon is even more unnecessary, large xenos will not attack such a small watchtower, and small xenomorphs will not attack this turret." ”

"And these anti-aircraft artillery, don't copy it in the city, but put it in an obvious place, it's best to attract attacks, so that if the xenomorphs launch a sneak attack, the first attack is your anti-air forces, so as to avoid a sudden attack on the land combat force and unable to respond in a hurry."

After a circle around the sentry post, Xia Lu pointed out the defenses of the sentry tower one by one.

He's been doing this all morning.

Chen Cheng will be the largest cargo center in Wudu in the future, and defense is the top priority of Wudu.

Based on Xia Lu's understanding of xenomorphs, the major forces in Wudu wanted him to help guide the defense.

At first, Xia Lu just talked casually, but later he found more and more problems, and the more he said.

And after he finished saying this, Chang Feng's angular face twitched slightly.

This expression has appeared for the fourth time today, and every time Xia Lu finishes instructing, he has to show such an expression.

Sensing that his expression was wrong several times, Xia Lu smiled.

"What, think I'm not right?"

Chang Feng saw that he noticed his attitude, his expression tightened, and he quickly shook his head.

Chang Xin looked at his cousin and said with a slight smile: "I don't think Mr. Xia is a careful person, don't worry about what you have if you have any problems." ”

Chen Cheng's defense is very important, and Chang Xin doesn't know how to fight, Xia Lu's words can only understand the surface meaning, so she also wants to hear Chang Feng's opinion.

Chang Feng frowned slightly.

After pondering for a while, he said, "Commander Xia's suggestion is a bit on paper. ”

"The layout of our posts is all based on long-term and heterogeneous warfare, and they are all effective methods of warfare so far, such as building city walls, and setting up high-energy cannons in guard towers."

"Theoretically, large xenos won't attack small towers, but our towers have been attacked many times."

Hearing his words, Chang Xin immediately showed a look of surprise and nodded slowly.

Theory is one thing, practice is another.

Sometimes the theory is very correct, but the reality is completely out of step with the theory.

Her eyes fell on Xia Lu, and her face was full of smiles.

But looking at her expression, she very much agreed with Chang Feng's statement.

However, she was afraid that Xia Lu would be angry, but her smile was still full of respect.

Xia Lu didn't get angry because there was no reason to be angry.

He could already see that the two men disagreed with him, but he didn't mind.

Smiling slightly, Xia Lu said: "Sometimes, when people are faced with unknown things, they tend to make wrong judgments based on individual experience. ”

"One phenomenon only happens once, and when it hits it successfully, they think it's the way to solve the problem."

"Sometimes the method may not be right, but when it is used, it has an effect, and it will make people feel that they are doing the right thing."

"Practice works, but it doesn't work, like ......"

He pointed to the tall city wall and said, "In the eyes of the xenos, the harder the shell, the more delicious the meat, so the higher the wall is built, they will think that there are more humans behind the wall, which is why the xenos will be the first to attack the watchtower when they sneak attack." ”

"And for xenos, the fastest and most efficient way to loot food is the most important, so they don't care about anything other than their target, this is their offensive logic."

"So, the big xenos will attack the small towers, because the small towers for you are the place where they have the most food, and when they find that there is no one at the end of the tower, the xenos will move to other places."

"If we don't build a city wall and boldly expose the situation of the base, including the number of people, the xenos will feel that this is a little difficult to deal with or not important at all, and will not attack, but will attack other targets."