Invisible air currents?

That's a magic trap, right?

Liu Xing looked at the furnishings in this room, and found no magic array or magic props, it seems that only when pressing the small bead will the magic array or the disguise on the magic props be triggered.

However, although he couldn't find the magic array or magic props in the first place, Liu Xing found a polished bronze mirror that was very smooth and translucent.

Liu Xing looked back at the window in the room, closed his eyes and simulated the application of physics knowledge that he had almost forgotten, and determined one thing - if he used this bronze mirror, he could indeed let the sunlight or moonlight change its course and shine on the small bead.

Of course, this also has certain requirements for the position of the sun or moon in the sky, so now the sun in the sky has gone too far, so you can only wait until the moon comes out to try, but there is also a precondition for this, that is, there should not be too many clouds in the sky tonight to cover the moon.

That should be a verdict.

Thinking of this, Liu Xing looked at Li Hanxing beside him, and Li Hanxing's face was serious at this time, and it was rare to look serious.

Because there was a group of NPCs eyeing each other, it was not easy for Liu Xing and the others to communicate, so Liu Xing and the others could only completely leave the decision on this matter to Alice.

Alice also knew that in the current situation, it was unlikely that she would seek the advice of Liu Xing and others, but Alice knew that her thoughts should be similar to those of Liu Xing and others.

So now Alice is struggling with a question - are those two knight NPCs trustworthy?

Or, to put it more bluntly, will these two knight NPCs arrange for their men to launch an attack after the fact, in an attempt to monopolize this possible treasure?

The most unpredictable thing is the human heart.

At this moment, a knight NPC couldn't help but ask Alice how the situation was, "Miss Alice, do you see how this mechanism should be cracked?" ”

Alice pondered for a moment, then finally nodded and said: "Actually, I already have a little eyebrows, if I am not mistaken or mistaken, the small bead that is set on the iron door should be a very valuable, or it can be said that it exists in the legend, because it can absorb light and change its color, but since this small bead is used here, it means that the correct way to open this mechanism is likely to let the small bead shine some kind of light, either sunlight or moonlight." ”

The NPCs present all showed a sudden realization.

The knight NPC who spoke before ran to the window to look, frowned and said: "Miss Alice, if you don't say it, I haven't noticed that the location of these windows is really cleverly designed, and it is impossible for the sunlight shining into this room to come into contact with the small beads, so this should require other tools to crack this mechanism." ”

At this time, another knight NPC pointed to the window closest to the dark room and said, "Then should we just smash that window so that the sunlight can shine directly on the beads." ”

It's a good and simple approach.

But Alice shook her head and said: "Although it is indeed much easier and more convenient to do this, but this is not a real borderland, we are undoubtedly offending the Marquis of Zum by doing this, or a certain duke in the future, if he only pursues the treasure we have obtained, it will be a good thing, because if he is ruthless and does not take into account the kinship between us, then we will have to pay him another sum of money, a castle decoration fee." ”

This made the knight NPC who wanted to smash the wall touch the back of his head a little embarrassed, and he had nothing to say for a while.

Alice shook her head, naturally stepped forward and picked up the bronze mirror, and continued: "I think this bronze mirror should be an important tool to unlock the mechanism, because the previous owner of this castle should not have to smash the wall every time he entered the secret room, after all, making such a big noise should be contrary to his original intention of wanting to enter the secret room, so I think he should put this bronze mirror at a special angle, so as to use sunlight or moonlight to activate the mechanism, so as to open the secret room." ”

Alice paused, frowned and continued, "But now another question arises, and that is whether this little bead will react to sunlight or moonlight? ”

"Miss Alice, you mean that this little bead should only react to one light, and the other light will make the little bead have the opposite effect?" A knight NPC asked nervously.

Alice nodded and said affirmatively: "It should be so, after all, I don't need to talk about the difference between sunlight and moonlight." ”

The two knight NPCs nodded yes.

Looking at the two knight NPCs, Liu Xing, who was calm on the surface, couldn't help but smile in his heart, feeling that Alice was bullying them for not being knowledgeable, but this was the limitation of the times that these two knight NPCs were subjected to, and it was impossible for them to know that the moon itself was not shining, because the moon was just reflecting the sun's rays.

Therefore, the moonlight can be said to be a low-profile version or a cooling version of the sun.

Therefore, Liu Xing has now figured out the principle of this small bead as the core component of the mechanism, to put it bluntly, this small bead is a photoresistor, and when it is affected by light, the resistance value will drop rapidly, so that the "overall circuit" of this mechanism can be connected smoothly, so as to achieve the effect of opening the door in the secret room.

However, because this small bead belongs to a material that Liu Xing and others have never seen, Liu Xing and others do not know whether this small bead has certain requirements for temperature, so it is very likely that the temperature is too high and the small bead is burned, or the temperature is too low to cause the small bead to not function normally.

Therefore, for the sake of insurance, Liu Xing and others reached a silent consensus very tacitly, that is, to put the first experiment at night, because the low temperature of the moonlight at most makes the small bead unable to operate normally, but it will not directly destroy the small bead.

So, at Alice's insistence, the two knight NPCs agreed to wait until the evening to conduct the experiment, and now the group continued to explore the other rooms in the main castle.

So, Liu Xing and the others came directly to the top of this main castle and began to explore... This is the fourth level of the main fort.

The fourth floor of the main fort also has some bedrooms, but it seems that these bedrooms have not been occupied for a long time.

"It seems that the previous owner of this castle is really in the middle of the family, because the population of the family is not enough to live in the entire main castle."

Alice shook her head and continued, "I guess I didn't say anything wrong, right? ”

Liu Xing nodded, and said with a smile: "It should be right, my thoughts are the same as Alice and you anyway, but the biggest problem now is still those two knights, will they be the kind of people who cross the river and tear down the bridge?" ”

"I'll see the hanging." Li Hanxing said seriously: "These two guys look like the kind of people who love money, otherwise they wouldn't have come here to hunt for treasure at the beginning, and this is still a treasure with a high probability that it does not exist, first, because the rumors of this treasure have no real evidence, and it is completely a small piece of news; The second is that Duke Gundogan should have heard about this treasure, so even if there was a treasure in this castle, it might have been taken away by Duke Gundogan. ”

"But the most important thing is that in their eyes, their side has an absolute advantage, first of all, because our spear can't be used here, so the only reliable weapon is the long sword in my hand, and their side is a weapon in each hand, and we have a big disadvantage in the weapon; Then there are the number of people, they are twice as many as us, and to be honest, Alice, you look like a pampered aristocratic lady in their eyes, after all, the only set of weapons and equipment on our side is still in my hands, so in their eyes Alice, you can't be regarded as a combat power. ”

Alice nodded, sighed and said, "That's right, in this special world with a medieval background, although I have learned some self-defense techniques before, but in this kind of situation where I really want to use a knife to be ruthless, my combat effectiveness has to drop several levels." ”

Liu Xing also sighed, shrugged his shoulders and said: "I'm about the same, I have learned Tai Chi as an attack skill in college since I was a child, and now I have forgotten about it a long time ago, so if you really want to fight later, I'm afraid you can only watch Li Hanxing." ”

Li Hanxing smiled, patted his chest and said, "No problem, in fact, as long as you don't fight in the open terrain outside the castle, then Sun Huiwen and I can still easily kill those guys, because except for those two knights, they should be professionally trained, and their subordinates seem to be wild." ”

Sun Huiwen didn't speak, just smiled and nodded.

"But if the battle is fought in an open area, then as soon as we start fighting, we will cover Liu Xing, you and Alice will get out of the battlefield, and then Liu Xing, you can just run, don't have the idea of staying to help us, because to put it mildly, in this case, you will only become our oil bottle, and we must spend some energy on you." Li Hanxing said seriously.

Liu Xing and Alice both understand this very well, and they also believe very much that Li Hanxing and Sun Huiwen, the two old partners, can defeat those NPCs without danger, so they both smiled and nodded.

"Back to the point, do you think there is a knighthood hidden in that secret room? I think if there is a knighthood medal in this castle, then it should be in this secret room, because it is also a place with clues. Sun Huiwen said.

As soon as Liu Xing wanted to nod, he suddenly thought of a question, "Although it is indeed possible, I think one thing is worth noting, that is, if Duke Gundogan has left clues for those title medals that he has hidden, then these clues should be related to him, not related to other people, so I think that without the support of other clues related to Duke Gundogan, the possibility of storing the title medal in the secret room is not high." ”

As soon as Liu Xing's words fell, he found that the world outside the window was suddenly pressed again, and the sun set in an instant, but the moon had just appeared in the sky.

According to the research of Liu Xing and others, only when the moon hangs near the middle of the sky is the best time to use the bronze mirror to open the secret room.

"It's really coming soon, I thought it would be an hour or so before it got dark." Liu Xing touched his chin and said: "But I have a guess now, that is, this time fast forward must actually meet a prerequisite, that is, within a certain period of time, those 'locals' cannot appear in the vision of us outsiders, so that these 'locals' can appear where they should appear, instead of standing in place and at a loss like us." ”

"It's very likely, after all, these 'locals' are one with this world, so if we outsiders keep staring at the 'locals', then won't there be a situation where time is fast forwarding?" Alice asked.

Liu Xing shook his head without hesitation, and said affirmatively: "This special time definitely does not allow us to take advantage of loopholes like this, it will either arrange for us to stay somewhere at the necessary node of time fast forward, or let those 'locals' go to a place where we can't reach, for example, Zum arranged for us to stay in his own small building, and the 'locals' all follow him in the main fort, if we dare to sneak into the main fort, then the guards of the main fort will not stay." ”

"And there is also a possibility that the time that we outsiders can stay in this special world is relatively fixed, so we can keep an eye on those 'natives' for a day or two in a row, but when we are not careful, or reach the upper limit of the time we can stay, then time will rush to the knighthood ceremony desperately." Li Hanxing continued to add.

At this moment, Liu Xing and the others heard a sound of footsteps, "Miss Alice, my master invited you downstairs to dinner, they just caught a few rabbits and pheasants outside the castle." ”

"We'll be right there."

Alice turned her head and whispered, "It seems that Liu Xing, your guess may be correct, but let's be careful when we eat later, and be careful that they add ingredients to our food." ”

Liu Xing and the others nodded, and then followed Alice to the outside of the castle... One thing to say, because there weren't enough torches, it was really dark inside the main fort.