Just as Zheng Feilong's body sank and was about to touch the laser emitter, Zheng Feilong slammed his waist hard

, slowly put the body up.

The reason why he reacted this way was because he saw that there was an audible alarm behind the laser emitter. This audible alarm is extremely sensitive. If the sound exceeds 45 decibels, an alarm will be made immediately. When the switch was toggled just now, it should not have triggered the alarm. But Zheng Feilong knew that his arm was attached to the wall panel, and the weight of his whole body fell on it, and he couldn't hold on for long. And the sweat on his forehead is getting more and more. If sweat drips, the sound is likely to trigger the sound alarm.

Zheng Feilong knew that the longer it dragged on, the worse it would be for him, so he gritted his teeth and moved forward. For every two steps you climb, take a deep breath. When breathing, don't dare to push too hard, for fear that the sound will be too loud and trigger an alarm. Fortunately, it was him, who had strong internal strength, and he really couldn't support it if he changed someone else.

Although it was only a short distance of one meter and seventy-five, Zheng Feilong took nearly ten minutes. The sweat was about to fall several times, but he wiped it off with the clothes on his shoulders, so that it would not fall down and hit the steel plate below. When he slowly lowered his body, he found that his back was already soaked. Both arms also collapsed a little due to overexertion, and had to rest for a while.

When his body recovered, Zheng Feilong climbed forward to a fork in the road, turned his body upside down, and slowly reinstalled those laser emitters. This is much more cumbersome than unloading. His arm, though relieved from collapse, was not as agile as it had been. Every time I carefully install one, my fingers will tremble slightly. By the time all five were installed, Zheng Feilong didn't know how many times he had been closed at the ghost gate.

When you reach the fork in the road, adjust your body and continue to crawl forward. He had to do it quickly, and it had been a long time since he had done so. This bone shrinking work is extremely depleting of internal force. Fortunately, Zheng Feilong had already reached the peak of the seventh layer at this time, otherwise he would not be able to hold on when he went back to install the laser emitter just now.

Here, if you can't play the bone shrinking skill, there is only a dead end. The narrow vent would clamp his normal body tightly, and he couldn't move at all.

Fortunately, Huang Tian lived up to his painstaking efforts, and Zheng Feilong crawled forward for a few minutes and entered a large ventilation hole. There was a sound of "pop" and "pop", and Zheng Feilong's body returned to normal.

According to the information given by Li Shishi, walking more than 100 meters from this ventilation hole, you will reach the entrance of the destination, but I don't know if there will be any other traps in the middle. But at this time, even if there is, it must be moved forward.

His physical condition did not allow him to go back at all. Zheng Feilong can't go back anymore, giving up halfway is definitely not his character.

Ordinary people don't die if they don't reach the heart of the Yellow River, and they don't hit the south wall and don't look back; He didn't die when he reached the heart of the Yellow River, and he didn't look back when he hit the south wall.

I don't know if it's his luck, the back is unobstructed, and the ventilation holes are getting bigger and bigger. When I got to the back, I didn't have to climb, and I was able to squat and walk slowly. After arriving at the entrance of the destination, Zheng Feilong did not rush to open the vent and jump in, but listened for a while, which was his professional habit.

There was no sound of talking or walking below, but there was a subtle and even sound of breathing. Judging by experience, it is either a high-level special soldier or a martial arts master. It is absolutely impossible for a person with ordinary training to breathe so elongated.

"Who?!"

Suddenly, a heavy voice came from below.

Zheng Feilong was shocked, and said in his heart, could the other party have discovered him. Just as they were thinking about whether to jump down and knock them down, there was a sound of heavy footsteps below. An arrogant middle-aged voice came: "Old wolf." ”

Old wolf?! Why did this guy get here? Zheng Feilong was quite depressed in his heart, what is this guy doing here? Zheng Feilong didn't believe that he had come here to get some equipment. As we all know, assassination is the old wolf's favorite, and the stronger the target, the more he likes it.

Before the two could react, they heard the sound of a sharp weapon breaking through the air. This was followed by the sound of two heavy objects falling to the ground, and it was obvious that the two had been dealt with by the old wolf's flying knife.

Zheng Feilong secretly looked down from the grid of the vents. The expressions on the faces of the two were very resolute, showing that they were not people who would compromise easily, and that they should be highly trained special forces. His eyes were wide open, and he looked ahead in disbelief.

Around his neck, there was a throwing knife that was almost completely gone. On the wall behind them, two trailing blood stains were left. Obviously, two throwing knives pierced their necks. The precision and strength are astounding, and the old wolf really lives up to his reputation.

A figure that is neither tall nor short slowly appears in sight. The old wolf was facing away, and Zheng Feilong couldn't see his face.

But it can be judged that his expression at this time should be very excited. His breathing was slightly rapid, and killing seemed to be a good pleasure for him. Slowly pull out the flying knife and wipe it clean on the two of them. It was an elongated knife, thinner and thinner and sharper than a scalpel. It's no wonder that it makes a very sharp sound of breaking the air.

Tucking the blade in his sleeve, the old wolf whistled and picked up the badge from the fallen man, brushed the door open, and walked in slowly.

After he had walked for a while, Zheng Feilong jumped down from it. Zheng Feilong thought that he couldn't solve the two high-level special forces as easily as he did, and it would take at least a little time. However, he was not afraid of the old wolf, on the contrary, in addition to the initial surprise, there was some excitement about his arrival. Yes, excited. It's the excitement of a lonely master when he finally meets a challenging opponent.

Picking up the badge from the other person, he brushed the door open, and rushed in.

With the information provided by Li Shishi, she acted like a fish in water and rushed to the destination. Zheng Feilong listened with his downwind ear as he walked. I didn't hear anything suspicious, and it seemed that the old wolf had taken a different route. Zheng Feilong has no interest in his purpose for the time being. What he wants is to infiltrate the database and check some confidential information kept by Xinyuan Technology in the company's internal computer without networking.

I don't know why, the journey was very smooth, and there were no obstacles. Monitors, infrared protection, and all sorts of things, all of them. Although Zheng Feilong was a little puzzled, he didn't think much about it. But he soon discovered a problem. And this problem is quite a bit troublesome. He's lost......