Clues don't have to be counted on. Although Liang Jingmo often does things that seem reckless, he is actually as careful as a hair, and he is particularly sensitive to all kinds of clues. This kind of person will never easily leave his own traces. And most of the time he is very cautious, always anticipating the worst. Even if he confirmed that Xiang Nanxing was locked behind the door, he would prepare according to the situation that the other party could chase after him.

Of course, Xiang Nanxing couldn't find any traces of his visit from these doors.

In addition to these gates, there is another exit here. Xiang Nanxing walked to the corner at the end of the corridor and took a look, and found that at the end of the corner were several steps down, and there was another door when he went down. In this way, the corridor he was in should be something like a basement or something, and there were two or three floors below, and the deepest could lead to the first floor, which he didn't know yet.

But even if there is a deeper level, he can't rashly determine where the target is, after all, he doesn't understand the function and meaning of each layer, and the only clue is that the other party has just stayed in a place where the access control system can be operated. But he didn't have the drawings at hand, and this clue was useless. Maybe the other party is in this layer at this time, just a door away from him.

However, according to common sense, this kind of key equipment is usually not placed on the first floor, so if someone invades outside, it can control the access control system of the entire underground space when it reaches the first floor, so the defense below will be meaningless.

Most people with a bit of brains will put the key place in the deepest part of the maze and consider the same reason.

"So you should go down, and go to the deepest part without caring about anything along the way." Xiang Nanxing touched his chin and groaned, "But things don't seem to be so simple. There's a trap hidden inside. ”

After observing for a while, he took a break for a while, and his breathing that had been lost just now because he had opened the door with all his might had stabilized. But because of this pause, he noticed something abnormal on his body.

After his breathing stabilized, Xiang Nanxing found that he still felt a little tightness in his chest, as if the oxygen here was particularly thin, and he was obviously underground, but it was like he was on a plateau. He frowned and thought for a moment, stretched out his finger and dipped it in a little spit, then raised his hand and closed his eyes to feel the sensation on his fingertips.

"Sure enough, there was no wind at all." He opened his eyes with a solemn expression.

This will be his notice, the current door lock mode in addition to testing physical fitness also hides other killing opportunities, the previous vibration and the accompanying sound are a hint. Xiang Nanxing speculated that this method of closing the door was probably used to resist some harsher attack methods, such as water backfilling or poison gas attacks, so these closed doors would fit closely with the door frame under the action of hydraulic pressure, and the gaps in them could not even allow air to pass through, so that they had a defensive effect.

Of course, it is impossible for this place to completely seal off the air in and out, let alone defend against enemy attacks, it will only make this place a man-made coffin and bring about its own destruction. Normally, there will be at least a few key nodes in the entire underground space to arrange some ventilation pipes, but the location of these nodes is only known to Luo Lun.

Although Xiang Nanxing opened a door at this time to circulate the air between the corridor and the previous section of the corridor, even if they were connected, they were only a large enclosed space, and the problem of ventilation and ventilation had not been solved.

If he hadn't stopped by accident, but continued to move forward in one breath, repeating the high-intensity exercise of opening the door with the valve, there was a good chance that he would faint from lack of oxygen before he could find his target. Unless he's unlucky enough to open those node rooms with ventilation ducts before he faints.

But if you think about it, you know that the opening of this kind of pipe will definitely not be placed in the hallway. It is important to know that airtightness is a trap for intruders, after all, the local owner who knows the structure knows which doors to open for ventilation, and if the intruder only cares about going deep into the enemy line and does not notice the subtlety, it will probably be too late to react.

"Liang Jingmo, that guy should have noticed, right?" Xiang Nanxing was suddenly a little worried, but with Liang Jingmo's carefulness, he would probably not miss these details, and this was obviously not the time to worry about others.

There are three paths in front of him, and the most radical way is to break through the corridor as fast as possible, go down, and press his hope on the possibility that the target is on the lower floor, which has a high chance of being on the lower floor, and complete the task before he runs out of energy. At first glance, this may seem like an all-or-nothing gamble, but it's not as dangerous as it sounds, because when you open the door along the road, you will get oxygen from that area, which is also a supplement. As long as you allocate your physical strength reasonably and avoid excessive consumption, you still have a good chance to go down to the bottom.

But this practice is still the most dangerous, because he doesn't know if the other party is hiding other backs. In this way, his oxygen replenishment is completely dependent on the spaces that open up along the way, and if the other party has done something beforehand to release poison gas or something like that on a certain stretch of the road, he has no place to hide.

It's safer to slow down and search for a few nodal rooms with ventilation ducts to make sure there's oxygen before you act. Xiang Nanxing was sure that at least one of the doors on both sides of this floor led to such a room, but the problem was that he had to open them one by one before going in to observe, and then he could confirm whether it was or not, if the other party also moved in one of the rooms, then he might still be attacked by poison gas when the space was confined .

Taking a step back, even if the other party doesn't have time to make this arrangement, he just needs to open the door to confirm, but opening the door is a waste of time and energy. Nine gates, if you are lucky, the correct answer will be selected in the first door, which will naturally have little impact, but if you find eight of them, you will not find the target until the last door, and at that time, how much physical strength does Xiang Nanxing have to go to the next layer, and how far behind Liang Jingmo, who is one step ahead...... These questions are also worth considering.

Of course, in addition to these two methods, there is also the safest way, which is to turn around, open the doors in the secret passage behind you, go all the way to the entrance, and open the secret door hidden in the house. They had just passed this part of the road, and they would not encounter any traps set by the other party, and opening the secret door at the entrance was equivalent to creating a ventilation duct to provide some oxygen to the secret passage.

But to be safe, the flaws of this approach are also obvious - first he has to spend effort to open the relocked doors, which is a real drain, and he has to go back, all the way to the top of the secret passage, open the secret door and then walk back here to start again, the time and energy wasted along the way is not much different from staying here to open the nine doors.

Each of the three approaches has its own advantages and disadvantages, and he can only choose one of them. In other words, if you are some indecisive guys, at this time, you will inevitably have to think about the pros and cons a few times and compare them carefully, but Xiang Nanxing has a different view on this.

"Since there are pros and cons, it is the same to choose whichever one, the key is to move."

As he thought, he began to open the partition of the first door on the right, and began to toss the somewhat rusty valve. The rust of this valve was better than the previous door, and it was not so jerky when it turned, and as soon as Xiang Nanxing exerted his strength, it dropped a few pieces of rust, and then turned smoothly.

The heavy door panel moved slowly, and a small slit opened in the closed door. Xiang Nanxing did not rashly look inside, but turned sideways first, took a shallow breath, and discerned whether there was a peculiar smell in the air.

"It doesn't taste right!"

He frowned, feeling a pungent smell echoing through his nose, and it was clear that the room was not flowing pure air. He was also prepared for this, and his hands immediately turned the valve in the opposite direction to close the door.

It was just that at the moment when the door was about to close, Xiang Nanxing's eyes accidentally caught a glimpse of a scene in the room. The moment he saw the row of glassware, he realized that what he had just smelled might not actually be poisonous gas.

"Formalin?"

He stopped closing the door, and instead breathed again, and then he closed his eyes, carefully discerning the smell in the air.

That's right, formalin.

This is a common preservative in medical laboratories and is mostly used to store various specimens to ensure that they do not deteriorate. At this time, what appeared in front of Xiang Nanxing were some large and small glass jars. They are arranged in several columns according to their size, some of them are soaked in some unnamed bugs, some are soaked in small animals such as mice, and some of them are strangely shaped and unrecognizable at first glance.

"Can't you see, this guy is still engaged in biological research?"

Xiang Nanxing pinched his nose and stepped forward, crossed a few glass talks containing insects and dead mice, and directly looked at the contents of another jar. The thing inside was black, and there seemed to be some green fluff on the surface, and the shape looked a little familiar......

"Ahh

The moment he saw that thing clearly, Xiang Nanxing only felt a chill surging up his spine, his heart was so frightened that he almost stopped, and he couldn't help but almost scream. He subconsciously stepped back, but he stumbled, and the whole person staggered back several steps before he could barely stand firm, almost knocking down the other jars in the other row.

"What the is this!" He shouted inwardly.

He saw that the unidentified object soaked in that jar turned out to be a human palm! It was neatly disconnected from the heel of its palm, and its whole hand remained slightly curled up, and the green fluff covering the surface was probably mold or something, and it looked like it had been soaked in it for a long time. Judging from the size, this hand is significantly smaller than Xiang Nanxing, and the fingers are much slender, so it should be either a woman or a child.

"What the hell is this...... Xiang Nanxing looked left and right in shock, his gaze unconsciously sweeping over one jar after another. Suddenly, his gaze stopped on one of them.

It was a small jar soaked with beetles that he couldn't name, and at first glance it was nothing special. However, the altar was facing the door he had just entered, and the reflection of the light was now reflecting the scene of the doorway.

There, there was a man who was leaning out his little face and looking at him, his gaze as clear as water, as if he had no emotion.

The moment the two looked at each other, Xiang Nanxing felt that his heart really stopped beating.

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