Crystal Palace is clearly in some sort of regulatory mode.

The city is silent when high-powered factories and equipment are out of service, there are no private submersibles on the streets, and people have to swim slowly.

The lighting system switches from bright as day to dark crimson, and there is an oppressive feeling that the mountain rain is coming.

In a certain undersea hut, Lu Ping, Lu Xuejiang, and Yu Xin were talking.

"Project Black Hole?" Lu Ping listened to Lu Xuejiang's description and was a little speechless, "Mayor Zhu hopes that I can contribute to the defense plan of the Crystal Palace, and he actually came to me through the two of you." ”

That being said, he actually understands it.

Zhu Mei, as the mayor and the commander-in-chief of the Crystal Guard, must be very busy at this time! And the last time she came to invite Lu Ping to join the Crystal Guard, she had already been rejected once, and now she came to find herself through Lu Xuejiang and Yu Xin, and the effect was naturally much better than if she came in person.

She must have known the "relationship" between these two and herself.

"I wish the mayor is still very sincere, not only promising a reward of crystal coins, but also asking me to remove the strong magnetic handcuffs for you." Lu Xuejiang glanced at Lu Ping deeply, "I didn't know you were still wearing this thing, this is a special tool for extraordinary criminals...... Was it because you sneaked out to find the two of us last time? ”

Lupin shrugged noncommittally.

Lu Xuejiang quickly bent down and aimed the strong magnetic cuffs on Lu Ping's body with the electronic bracelet, and entered something, and then the strong magnetic cuffs clicked and fell off automatically.

"Alright, let's get down to business." Lu Xuejiang straightened up, "This form is really grim!" It is said that the King of the Immortals has ordered his subordinates to search for our Crystal Palace in hordes of undead in this area, with a stronger purpose than before......

"It is said that two or three hundred teams are wandering out there right now! Each team had a dozen undead, and the total number of undead exceeded three thousand...... As a result, the risk of exposure to Crystal Palace is much higher than before. That's why the whole city will enter the noise control, and the mayor will come up with the black hole plan. ”

"What exactly is Project Black Hole?" Lupin was puzzled.

"Do you know about black holes?" Yu Xin interjected at this time, "I saw in the book that it is a kind of celestial body in the vast universe, because it does not emit light, and once the light from the outside world enters it, it can never escape, so in the eyes of the outside world, black holes are equivalent to invisible!" ”

Lupin realized, "I wish the mayor wants to make the Crystal Palace as invisible as a black hole?" ”

"That's right." Lu Xuejiang nodded at this time and said, "As long as it is guaranteed that no team of undead who have discovered the Crystal Palace will be able to leave the range of the Crystal Palace alive, then we will be invisible...... The specific implementation method, because the patrol department is also involved, so I know a little bit about it.

"The key is the huge virtual projection barrier that covers the entire Crystal Palace! Its existence makes it impossible for the undead to see the Crystal Palace from afar...... You have to get within two hundred meters of the Crystal Palace to find the flaw through the soul perspective.

"But as soon as they get within two hundred meters, the virtual barrier will instantly expand and swallow them inside! In this way, they seem to the outside world to be part of the ocean bed just like us...... Unless it's close, no one will notice that there's a fight taking place here.

"And what we have to do is to use the fastest speed to eliminate this group of undead who are trapped within the barrier of the Crystal Palace, not to let any of them escape, and not to let any of them send out an obvious distress signal!"

Lu Ping suddenly said: "I see, I probably know why Mayor Zhu is looking for me...... It shouldn't be just me, all the extraordinary citizens of the Crystal Palace who are not affiliated with the Crystal Guard should have been invited to join this operation. ”

The reason is simple.

This black hole plan, as soon as you hear it, you know, the most important thing is to be able to respond quickly! Failure to do so is empty talk.

The Crystal Palace is an underwater city with more than 100,000 buildings, and the diameter of the city is about 30 kilometers...... In such a large area, if an undead person breaks in anywhere, he can immediately send a force to meet it and quickly annihilate it, how can it be possible for the hundreds of transcendents of the Crystal Guard to do it?

"Indeed." Lu Xuejiang nodded, "Not only are the transcendents in the city mobilized, but the crab-shaped submersibles of the police station and the saucer-shaped submersibles of the patrol department must also be dispatched to cooperate with the transcendents to arm them...... This time, we are responsible for the same sea area, that is, the water above the block of Red Carp Street. ”

"You're participating, too?" Lupin was stunned.

"Yes, thanks to you, my injuries are healed." Lu Xuejiang looked at Lu Ping with complicated eyes, "You have always said that we are your parents...... I would like to say that although I really can't remember it, from today onwards, I will seriously try to accept this! ”

"Me too." Yu Xin touched the metal wire shoulder on his body, and sighed lightly.

Lupin looked at the two of them stunned.

"The more we get in touch, the more we feel like we're in love, so let's tell you today." The two looked at each other and smiled, then gently clasped their hands together and turned their heads to look at Lupin.

"You guys are ......," Lupin felt the familiar smell of dog food come to his face.

His face changed slightly!

For a while, I couldn't tell whether this was the original parents or my own parents watching me...... There is an eerie feeling of time and space being out of order.

It took a moment to suppress this strange feeling, and Lupin still smiled.

The two experienced a life-and-death crisis, and their relationship entered the realm so quickly, Lu Ping was quite fortunate in his heart.

————

Red Carp Street, a corner bar.

Lupin took a sip of a crystal clear cocktail, his eyes glancing at the electronic bracelet from time to time.

The surrounding customers, who could recognize him from the scales, were extraordinary, and naturally they all showed respectful expressions, and they didn't dare to come up and disturb.

Suddenly, the bracelet shook!

Lupin glanced at it.

"Three hundred meters in the direction of 11 o'clock, the undead were found approaching in the waters above?" Lupin is easily recognizable from a three-dimensional map.

Those who are close to the undead are shown as red dots on the virtual map.

Lupin drank the cocktail and plunged into the water, rushing upwards in the form of a fishman.

At the same time, in several other shops not far away, there are also three figures who also "rise to the sky"!

"One Sword Alone"

There was also a saucer-shaped submersible, which also immediately started its engine and began to float.

The three transcendents all looked at Lupin's side in unison - Lupin's swimming speed was obviously the fastest of the four.

The three transcendents suddenly showed unconvinced looks, and swam more vigorously.

At the same time, the virtual barrier in the sky above suddenly expanded outward by dozens of meters, and a group of strange-looking undead figures appeared within the scope of the Crystal Palace in an instant...... The sudden change in the environment made them look stunned one by one!

"Lupin, be careful, it's best to advance and retreat with a few other transcendentals!" Lu Xuejiang's reminder and advice came from the bracelet.

Lupin looked down slightly, and saw the saucer-shaped submersible hovering directly below him.

"Advance and retreat together?" Lupin glanced at the other three transcendents and saw that they had only swam thirty or forty meters below him at this time......

The group of undead above their heads had already come to their senses, and one by one let out a roar of excitement.

"Go back and tell the king! The human nest is here! "One of the second-turn immortals with shrimp tails directly bent down and flicked, and the whole thing jumped upwards quickly!

Seeing this, Lupin shook his head slightly, and his figure accelerated again, quickly catching up.