Train Survival: You're really trying to survive!

The attacks from the sea stopped, and Su Li and the others breathed a sigh of relief.

The air conditioner on the ceiling was still running, and the oxygen generator in the life support room was releasing oxygen to maintain the air in the few rooms that had not yet been flooded by seawater.

"Annoying." Su Li's brows furrowed. "If it weren't for the fear of damaging the train..."

As their strength grows, Su Li and his comrades used to regard the train as a mobile safe house. However, now the train's defensive capabilities can no longer keep up with the team's strength. Not only can it not provide protection, but it will also become a hindrance, like today.

"Once we get back, we need to find ways to improve the train's defensive capabilities. The first goal is to improve its anti-interference capabilities; the second goal is to upgrade the train's body material; and the third goal is to install defensive devices on the train."

After finalizing the next modification plan, Su Li looked at her teammates and said, "Mingyu has already taken care of the life detection. The remaining issue is the sonar's sound waves."

"Any ideas?"

Ivan shook his head. "We have no ideas. We don't know much about sonar."

“We’re not professionals, let’s ask the Blue Star government for help,” Sophia suggested. “Trust the professionals.”

Su Li found Zhang Qiang and explained the current situation.

After waiting for a while, Zhang Qiang sent a lot of information.

Su Li sent the information to her teammates, saying, "Take a look and think of a solution."

After a quick look, Ivan spoke first: "I've looked at the structure of the sound-absorbing tiles. We have a lot of resin, which can be used to make rubber. I can hand-roll simple rubber-based sound-absorbing tiles on a workbench, but there's not enough time right now. We don't have time to install the sound-absorbing tiles all over the vehicle."

Their vehicle is 90 meters long and is entirely covered with sound-absorbing tiles, which is a huge project.

After looking at it for a while, Su Li found two usable solutions.

“We can use acoustic decoys and noise jammers.” Just then, the sound of sonar came from the ceiling again, making Zuli’s ears itch.

Su Li scratched his ear and continued, "Find Zhang Qiang and ask if he has any tools for measuring sound wave frequencies. I'll figure out an acoustic decoy and a noise jammer."

Sun Keke raised her hand, and Su Li pointed at her, "What's your question?"

"Can't we just run away? Or can't we just go up and attack them?" Sun Keke voiced her doubts.

Su Li held up one finger. "First, we have the ability to counterattack, even annihilate the enemy. Why run? At an energy level of 1.2, the probability of encountering a Gold-level being is extremely low. Running away after being attacked would be too cowardly. Second, if we directly attack the enemy, they might want to take us down with them, unleashing a large number of attacks to destroy our train. Even if we get revenge, it would be a huge loss for us."

"First, determine our escape route, then retaliate fiercely!"

After saying that, Zuli headed straight for the workshop.

Opening the magic workbench, Su Li began selecting the items she needed from the storage slots next to it.

He couldn't create machines, but the abilities of monsters were incredibly diverse, including some that were adept at using sound and noise.

Su Li quickly searched for suitable materials among the monster materials in her home, but unfortunately, she had cleared out some materials before, resulting in a lack of variety.

After searching for a long time without finding anything suitable, Su Li opened Zhang Qiang's chat box and began to seek help from the Blue Star government.

Under Zhang Qiang's direction, Su Li quickly obtained the materials she wanted.

First, there's a monster material that looks like a bag.

The Noisy Lizard's Singing Bag

[Iron Grade]

[The organ that the noise lizard uses to emit various sound waves.]

Su Li recognized the Noise Lizard; it was listed in the beginner monster encyclopedia. This monster was somewhat similar to a bat, living in the desert and adept at using various sound waves to search for prey and evade enemies.

When encountering an enemy, it can also use various sound waves to attack the enemy's brain, causing the enemy to feel nauseous and gag, lose control of their body, and become a weakling, thus buying time for the Noise Lizard to attack or escape.

Su Li tore open one end of the snort and saw a large number of convoluted structures inside. The noise lizard controlled these structures to emit sound waves of different frequencies.

Zuli turned on the workshop's mute function and then began to study and modify the sound bag.

Shortly after, Zuli received a message from Ivan that the enemy's sonar frequency had been detected.

"Great, these two frequency bands will do."

Time was of the essence, and Su Li did not have much time left, so she did not carry out in-depth reforms.

This thing has tremendous manufacturing potential. Just by getting the materials, Su Li had a lot of ideas, such as a universal voice changer and a frequency-changing sound wave weapon.

However, there's no time for that right now, so Zurich can only create very basic props for the time being.

[Acoustic Decoy Type 1]

[Once activated, upon receiving sonar detection in the X-band, it will automatically generate a mobile decoy that simulates the acoustic characteristics of a train from a Blue Star civilization.]

Noise jammer

[Upon activation, it emits broadband noise, covering the x and y frequency bands, suppressing sonar signals.]

Zurich manufactured 5 acoustic decoys and 3 noise jammers.

Su Li stepped outside the train. Due to the great gravity, the water pressure at 200 meters made him feel suffocated.

Next, Zuli placed acoustic decoys around the area. After setting them up, Zuli continued to install noise jammers on the train and in the water.

After the installation was completed, Zu Li met up with Sofia and Sun Lili, who had also come outside the car.

Installation complete, let's go.

A cold light flashed in Su Li's eyes.

We were having a blast on the train, eating our secret food, when suddenly we were hit by several shots from you bunch of naval idiots.

So you think you're superior just because you're riding a battleship? Well, let your arrogance take its toll! I'll show you what nightmares are like; you've never seen the Fourth Calamity before!

Having made up their minds, Su Li and Sun Lili went directly into the ship to carry out a decapitation strike against the fleet members. Sophia observed the situation from the outside and would provide support if necessary. Sophia's explosive power should not be underestimated; she could use a basic attack like a missile without any problems.

Sun Lili took out a shower cap and handed it to Su Li.

Su Li picked it up and saw that it was a light gray cloak.

[Cloak of Concealment]

[Iron Grade]

[Disposable item; when worn, it provides camouflage, soundproofing, and reduces visibility.]

Sun Lili blinked. [It was just modified; it now includes the ability to absorb sonar signals.]

【here you go!】

Su Li and Sun Lili moved quickly in the sea, while Sophia released runes around them, causing the water to naturally avoid their bodies.

In the blink of an eye, Su Li and his group arrived in front of the fleet.