Each time a piece of film is consumed, the cost is very low and it is not troublesome, because the alien invaders have a strong recovery ability. As long as they feel uncomfortable, they can leave quickly. They will recover by themselves after a period of time, unlike machines that need to be repaired.

This is why the leader of the alien invaders has always used manual cutting.

"So that's how it is." Lou Fei'er finally understood. "Then now that we have the disposable film and cutting gun for self-defense, we can destroy the scarlet crystal? How do we destroy it? Use the cutting gun to cut the scarlet crystal into eight pieces..."

"Of course not." Xu Xin said.

The method given by the monster was to dig some small holes in various locations of the scarlet crystal, then stuff small nuclear weapons into them, and detonate them directly after Xu Xin and the others were away.

The core temperature of a nuclear weapon can reach hundreds of millions of degrees Celsius, and a temperature of hundreds of millions of degrees Celsius is enough to evaporate the concentrated scarlet crystal.

"Ah..." Lou Fei'er was puzzled. "Then wouldn't it be better to just use a large nuclear weapon to detonate it?"

"If that's the case, I'm afraid the destruction won't be complete," Li Wenxi said. "Even if there are a lot of them, as long as they explode outside the scarlet crystal, even if the core temperature can reach hundreds of millions, I'm afraid it will only evaporate part of the outer layer of the scarlet crystal, and it's impossible to destroy it all.

If you want to destroy it completely, it would be best to plant nuclear weapons in various locations within the Scarlet Crystal, detonate them multiple times, and then shatter the Scarlet Crystal completely before launching a massive explosion."

This is the method that the monster recommended to Xu Xin and his team, which is the most likely to succeed based on their existing equipment and weapons.

Xu Xin touched the other bracelet on his wrist.

Those were the super weapons from another time and space that Xu Ying had given him. If possible, Xu Xin didn't want to use them.

As it happens, this plan doesn't use the weapons here. If this plan succeeds, there will be no need to use the weapons here.

Lou Feier was about to say something when suddenly, Jin Yue behind her said, "Be careful, the entrance to the corridor is open again."

Everyone looked back.

The door that was already far away from them opened a crack again, and another small mechanical jellyfish flew in from the crack.

At the same time, a scarlet light suddenly shone from the other end of the corridor, illuminating the entire dim corridor into a crimson color!

"It's coming, get out of the way."

There was only one small jellyfish that was easy to hide, so Xu Xin and the others didn't have to lie down, but leaned against the wall.

The small jellyfish holding the scarlet crystal flew through the corridor at a very fast speed. In just a few seconds, it flew over the distance that Xu Xin and the others had walked for so long, and flashed past them.

The moment the mechanical jellyfish flew past, Xu Xin and the others felt a slight dizziness in their heads.

The light of that small piece of scarlet crystal seemed to have become even more dazzling and powerful after being snatched by the alien invaders. It shone on Xu Xin and the others, making them feel uncomfortable.

Fortunately, it only took a moment for the little mechanical jellyfish to fly away.

"Leave."

Several people left the wall.

"Half of the scarlet crystals have been recovered." Jin Yue said.

“…We must expedite our actions.”

Once the scarlet crystal is fully recovered, the situation will probably become even more serious for them.

These two tools that can cut scarlet crystal were stolen by them!

Xu Xin couldn't believe that the administrator of this world tree hadn't noticed this. The sky was filled with small mechanical jellyfish, and each one was probably a camera. How could they not notice this?

"Speaking of which, haven't we already taken a big step forward?" Lou Feier whispered, watching the receding mechanical jellyfish. "As long as Yingying and Wen Guixin can find the location of the scarlet crystal, won't everything be smooth sailing? Why did you all look so worried when you came out just now?"

"It's not that simple..." Xu Xin shook his head helplessly.

"The current situation isn't optimistic," Li Wenxi said distressedly. "We stole those two items. They're probably already suspecting we're after that giant scarlet crystal."

The selection of "Scarlet Crystal Cutter" must have been announced to most alien invaders, otherwise there wouldn't be so many alien invaders coming to this world tree.

In other words, in the eyes of the managers of this world tree, this deliberately created chaos was most likely organized by rebels in order to seize the Scarlet Crystal Cutter.

Although Xu Xin and the others are not suspected, the other party will definitely increase their supervision of the Scarlet Crystal.

After all, the cutters were stolen.

In their view, the rebels who stole the cutter would definitely cut the scarlet crystal to obtain the source of life.

Most importantly, if they discovered that the important "gatekeeper" of the world tree was no longer there, they would definitely be more vigilant.

The situation has really escalated. Although their action obtained the necessary tools, it also greatly increased the vigilance of the alien invaders.

"...There's no point in talking about this now. We can only take it one step at a time." Xu Xin glanced at the Hidden Cloak on his body. "With this cloak, even if the other party increases their supervision, we still have a chance of success. Moreover..."

Xu Xin spun the bracelet. "The monster just said that when we are really going to destroy the scarlet crystal, we should release it. It will attract some of our attention."

Monsters might actually draw most of the attention.

If a monster appears, the other party will most likely think that this series of events were caused by the monster and will try their best to hunt it down.

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