"Alright, the eighteenth biolab you are going to is there, as long as you can pass through this dark river in front of you, you can enter the eighteenth biolab. Good luck guys, I'll go first. ”

As the two of them were sent to a dark underground river, Tensen's voice visibly became trembling. He subconsciously kept retreating, as if there was a devil lurking in the darkness who wanted to eat people, and would jump out at any moment and tear him to pieces.

"Hey, look, there's a red ray on the ground! Who is so boring to play pranks with a red laser pointer? Do you think I'm scared? Battle pointed to a red ray of light about ten centimeters above the ground.

"Aren't you Xia Da?" Lin Luoyu rolled his eyes at Battle.

"That's right, I'm Xia Da, hahaha." Battle scratched his head and laughed like a fool.

Red line?

Lin Luoyu then remembered that Dr. Koizumi had just told Tianshen "Don't cross that red line", what does this sentence mean? And this red light is very bright in the dark, not like a trap in the movie, but like a reminder of something. What exactly is this meant to remind people?

Lin Luoyu couldn't figure it out, and suddenly he felt a vicious gaze watching him from behind. He turned around to see that Tensen was standing motionless at the elevator door, staring at him and Battle.

Although he couldn't see the eyes inside his skull helmet, Lin Luoyu felt that the vicious gaze just now was from Tianshen's eyes.

Seeing Lin Luoyu suddenly turn to look at him, Tianshen hurriedly turned around and walked into the elevator, and then the elevator door slowly closed.

I don't have time to care so much, and now it's the most important thing to rescue Wu Yuexin.

Lin Luoyu turned his head and raised his foot to cross the red line under his feet.

"I didn't expect that there was a dark river under the desert where this bird doesn't, what is the reason for this? Lin Xueba, can you explain it to me? With his hands behind his back, Battle looked like an interview examiner in college.

"It's very simple, that's because the temperature difference between day and night in the desert area is large, the temperature is low at night, and the water vapor in the air reaches supersaturation, condenses in the desert, seeps into the ground, and becomes the main source of groundwater recharge. Of course, this groundwater may also come from snowmelt and glacial recharge upstream. Lin Luoyu said the reason without thinking about it, all of which he learned when he watched "Animal World" on weekdays.

", Lin Luoyu, do you even know this? You're a physics bully and you're still studying National Geographic? Battle was shocked.

"Don't talk, we have to find a way to enter the No. 18 biological laboratory as soon as possible, Wu Yuexin may be ...... if it's too late" Lin Luoyu was very worried about the safety of the goddess, whenever he thought of Wu Yuexin's smile over the years, he would feel a special warmth.

At this time, Battle took off his high-tech smart watch from his left wrist and said, "It's so dark here, I always feel that something is wrong, if there is a man-eating crocodile in this dark river, then we won't die?" ”

Battle quickly found the lighting pattern on the watch's interface, and then a bright light emitted from the surface of his watch.

"Wouldn't it? Why is your crow's beak so effective? Lin Luoyu saw dozens of pairs of bright eyes suddenly appear in the dark river through that light, and when he looked closely, those eyes turned out to be crocodile eyes.

"I, I, I'm just casually, casually, casually, now, now, now, now, now, now, how, what, what are we going to do?" Frightened, Battle dropped his watch on the ground, and then he immediately picked it up and staggered away in the direction it came.

Unfortunately, the elevator had already gone up, and no matter how much Battle pressed the button down the elevator, the elevator did not respond.

"It's over, I'm not going to feed the crocodiles here." Battle's tears were about to come out.

Now Lin Luoyu finally knows what the red line is for, it is a warning light set up to prevent someone from inadvertently intruding into this dark river, once someone crosses the red line, the power system of the elevator will automatically shut down. When the time comes, these crocodiles in the dark river will tear the intruder into countless pieces in minutes.

But at the same time, three question marks quickly rose in Lin Luoyu's mind, how could these crocodiles appear in the dark river under the desert? What is the significance of their existence here? Also, what do so many crocodiles usually rely on to sustain their lives?

There may be only one answer to these three questions, and this answer should be hidden in the eighteenth biological laboratory, but Lin Luoyu doesn't have time to think about it so much, because those crocodiles are slowly approaching them!

"Ahh What to do? I don't want to die. Crocodile dads, will you let me go? My meat doesn't taste good at all. Don't come here, come here again and I'll call the police, I really called the police, I really called the police, hehe, just kidding, how could I call the police and let the police arrest you? Don't eat me, I will cook delicious dishes for you every day in the future, I am a national super chef, I will make braised beef, braised mutton, braised chicken, braised duck, braised donkey meat, braised ...... Crocodile grandfathers, no, crocodile ancestors, you adults have a lot, don't, don't, don't come......" Battle was so frightened that he was incoherent, he desperately slapped the horse at those cold-blooded crocodiles, flattering, but unfortunately this trick was useless, and those crocodiles still surrounded Battle and Lin Luoyu step by step.

Lin Luoyu was also a little panicked at this time, but suddenly a flash of inspiration flashed in his mind.

That's right! Don't I have a Taobao system? Why did you forget about it at the critical time?

Lin Luoyu slapped his head, and then he immediately entered the Taobao system.

Now the situation is extremely urgent, you have to find a good tool quickly, Lin Luoyu quickly entered the word "emergency escape tool" in the Taobao search bar.

A variety of tool names appeared on the Taobao page, such as "Emergency Black Hole Shuttle Ship", "Time and Space Transfer Scroll", "Flying Broomstick", and "Quick Recovery Potion". Although the functions of these items are strange, they all have one thing in common, that is, Lin Luoyu can't afford it!

The lowest selling price of these high-tech tools is 199 Star Sky Coins, and poor Lin Luoyu only has a few dozen Star Sky Coin in his account, not even a fraction of those high-tech items.