Xu Liang walked to the window and turned off the light again. In this way, he can see the dark scenery outside the window more clearly.

He watched the two security guards, one fat and one thin, come out of the building, watched the two of them gossip with each other, and watched them walk into the communication room at the door.

It seems that everything is calm.

The small crisis is over for the time being, and the rest of the matter is just to take the loot away, and, more importantly, wait for the old man's test results to come out, take the data away, and go back for analysis.

However, at this time when the wind was calm, Xu Liang's brows gradually wrinkled.

It was still pitch black outside the window, and it was dark except for two lonely street lamps. It is not difficult to understand that although it is within the third ring of the imperial capital, places such as research institutes, government agencies, and courts are fully capable of having such independent courts.

Although he couldn't see the surroundings clearly, Xu Liang felt a faint power pouring out of the surrounding darkness.

He didn't feel good.

Xu Liang: "Duanhan, how long do you have to finish there?" ”

Duan Han looked up at him in surprise because of his unexpected name to her: "There are still two or three minutes, and it may take five or six minutes to process the data and check the data, what?" ”

Xu Liang: "There is a problem, and it is becoming more and more obvious. ”

He continued: "Actually, we have always had this kind of question, that is, why is there no one in the laboratory at night? A sentence that scientists go home to hug their children and hurt their wives does not explain this problem. Consider that there was a global tsunami earlier today, and a problem of this magnitude happens to be an area of national scientific attention. In this case, it's normal for someone to work overtime! ”

Duan Han listened to Xu Liang's analysis, and his brows furrowed.

"And." Xu Liang said again, "Do you remember the 'martial law' mentioned by the two security guards just now? ”

"I have the impression that you still managed to get through this problem."

Xu nodded: "That's right, it seems that this martial law order can explain why the scientists have gone home and there is no one in the laboratory." But martial law itself is incomprehensible! At this time when state-level scientific research forces are needed, the state organs forcibly give the institute a holiday, why? ”

"Of course, the last and most critical question." Xu Liang made the final inference in a deliberate tone, "Don't you think the way this camera works is very strange? ”

When Xu Liang spoke, his eyes kept staring at the camera on the ceiling, and Duan Han finally looked up.

This camera is the center of the five cameras in a large lab. It's also the one that has been fine-tuning the angle since the beginning. In fact, apart from this one, the other four cameras don't have any motion at all.

The rotation angle of this camera in the middle is limited, and in fact, it didn't capture Xu Liang's cold body at all. The fat and thin security guards also seem to have made a judgment of "possible entry" based on the change in the location of the items in the laboratory.

"But that's weird." Xu Liang continued, "With the mental retardation level of those two security guards, can they pass the communication barrier set up by your old end?" ”

"I can't." Duan Han's answer was categorical.

Xu Liang had no doubts. Although he often jokes about Duan Han, such as ridiculous remote control and the like, in terms of technical strength, he will never doubt Duan Han's actual combat ability. On the other hand, if those two security guards had the technical ability to break through the communication blockade of Duanhan, they would not be security guards here.

If it weren't for the two security guards, one fat and one thin, who would be able to break through Duanhan's communication blockade?

"And we all know that." Xu Liang said again, "The camera can work without an indicator light." So the question is, why did the camera in the middle turn on the indicator light in advance? ”

Xu Liang thought as he spoke, and then suddenly said, "Is this indicator light prompting us to run away quickly?" ”

At this time, Duan Han also seemed to think of something, staring at the camera indicator: "Is it prompting us to run away quickly?" ”

The two of them said the same thing almost at the same time!

Xu Liang immediately said: "The bad feeling of the surrounding darkness pouring in, the unexplained martial law, and this camera...... I think all three of these things point to the same problem. The point is, what exactly is the problem? ”

Duan Han still maintained the posture of looking up at the camera, and then Xu Liang's question just now, replied, "Maybe we'll know right away." ”

"You know the answer?"

Duan Han didn't speak.

She stretched out her left hand and touched her mouth, signaling Xu Liang not to speak, still carefully looking at the camera in the middle of the ceiling.

The camera is still shaking slightly, and its indicator light keeps flashing.

On, off, on, on, off......

Xu Liang couldn't see any patterns.

But the more Duan Han looked, the more cautious his expression became.

Xu Liangyi frowned: "What do you see?" ”

Duan Han didn't speak.

She took out a pen and paper and began to take notes.

Point, horizontal, dot, dot, horizontal......

"More than a century ago, when radio was first invented, the Morse code, a well-known encoding method, was invented, which relied on simple two-level numbers to convey quite complex information. The simplicity here refers to the fact that only dots and horizontals are needed to do this. ”

Xu Liang watched her write on the paper and check the information with the camera on the ceiling at all times. Finally, the camera stops moving.

Xu Liang: "How can you be sure of this...... Is this thing that code? ”

Duan Han: "This is not Morse code. ”

Xu Liang: ???

Duanhan: "This is Duanhan code. ”

Xu Liang: !!

Duanhan: "The Morse code was invented by a Mi Chinese named Morse in the mid-19th century, and the Duanhan code was invented by me in the early 21st century. The indicator light of the camera, the continuous 7+1+7+1 indication mode, is the prefix of the coding table. ”

Xu Liang: !!

Duan Han: "This is something I wrote in a scientific research forum before, and it was just because it was fun and biased towards Chinese users, so it became unexpectedly popular after a while." ”

Xu nodded: "Now is not the time to talk about history, so what kind of information is the message expressed by this camera just now?" ”

Duan Han handed the translated text to Xu Liang to read.

The text is very simple, with a total of two sentences.

First sentence: DuanHan, long time no see.

Duan Han: "See, this guy who operates the camera can call my name." Not only did he know me, but he also greeted me in Chinese English. ”

Xu nodded, then looked at the second sentence, which was a little more outrageous: "run, or die." ”

It's very simple in English, but the information revealed is unusual!

And at this moment, Xu Liang suddenly felt something, and looked out the window fiercely!

There, in the environment of the black hole, a large amount of metallic luster appeared!

Duan Han asked, "What?" ”

Xu Liang was well-informed and said solemnly: "It's a gun." ”

"Guns?"

"Guns, all guns, dozens of guns." Xu Liang said, "We have run into the army. ”