It was a weird rustling sound, mixed with the sound of gravel rubbing together, and the sound of water droplets splashing... No matter what kind of sound it was, it was obviously deliberately suppressed, and it sounded extremely
eccentric.
Noticing the sudden unusual sound, Lei Xiao and his subordinates, who were traveling, looked stern and stopped one after another.
It must be said that in this empty and spacious unfamiliar tunnel passage, this sudden subtle sound is particularly eye-catching.
Immediately afterwards, Lei Xiao waved his hand.
The group of people with solemn expressions began to slowly move to the right side of the passage and quietly stood near the edge of the cave wall.
When they were moving forward before, the group of people was walking on the right side of this huge underground passage.
Although the group of people are all wearing invisibility cloaks, which can perfectly hide them visually, there is still a risk of being discovered by their opponents.
In this way, once a large army of goblins passes by, they can quickly avoid the side of the cave wall and avoid directly colliding with the other party's soldiers.
After all, the purpose of Lei Xiao's trip was not to completely eliminate this unknown number of goblin tribes and create powerful enemies for himself.
Instead, we were looking for Benson's traces. It would be much more convenient to act in the dark than in the open.
"When we were at the City Lord's Mansion just now, even though the deputy general who received him tried hard to make everything look normal, when Benson was mentioned, the worry on his face was still palpable."
Nodding slightly thoughtfully, Lei Xiao continued to think: "This place is not very far from Luolong City. If we are just doing reconnaissance, it is indeed a bit unusual to have not returned for three days."
"It can be seen from this that the "Skull Crushing Crazy Man" may have encountered some kind of unexpected event."
Thinking of this in his mind, Lei Xiao brought his thoughts back to reality.
In addition to finding Benson, he now faces another thorny problem: the sudden strange sound.
At this time, Lei Xiao, who was surrounded by his subordinates, took further notice.
Except for the ethereal sound of water dripping from time to time on the cave wall close behind him.
The sudden rustling sound began to become more obvious and clear.
This means that the source of the sound is slowly approaching our group.
However, even with the night vision effect of "Star Eyes", there was still nothing in front of Lei Xiao.
This undoubtedly shows that the other party is also in an invisible state like our own.
Realizing this, the subordinates around Lei Xiao couldn't help but start to look at each other in confusion.
This sudden situation has obviously never been encountered before.
At the same time, a big question mark couldn't help but pop up in the minds of everyone present: "What exactly is making the sound?"
"I have to say that in this already weird environment, there are weird sounds with no visible source. It is really the icing on the cake and makes people's hair stand on end."
In the pitch-black cave passage, Lei Xiao looked at the dark green crystals inlaid on the cave wall around him, emitting little green light, and couldn't help but curl his lips slightly.
Next, Lei Xiao shook his head gently to throw these negative emotions out of his mind, and his face became solemn again.
He first raised his index finger and put it in front of his lips to signal his followers to wait and see.
Then, his eyes jumped, and he first looked at each other with Huzhang and Hongye.
From the somewhat solemn eyes of the two, Lei Xiao got a response, that is, in terms of energy fluctuations and aura, neither of them noticed any clues.
Or in other words, the source of the invisible strange sound did not emit any energy fluctuations.
Immediately afterwards, Lei Xiao looked at Bai Wei again, who lowered her eyebrows and shook her head helplessly.
This means that, in terms of smell, nothing is gained either.
Finally, Lei Xiao lowered his head slightly and cast his gaze on the small and exquisite Nanxing and Nanyue sisters.
The twin sisters understood and pointed at their insteps with their slender fingers.
By now, the answer is very obvious.
The sudden rustling sound seemed to be the sound of footsteps.
"Footsteps? Could it be that the other party is also wearing illusion equipment similar to an invisibility cloak?"
Just when Lei Xiao was confused, the rustling sound of suspicious footsteps was already very close to him.
At this time, Lei Xiao signaled his subordinates to be ready for battle at any time, while he held his breath and listened carefully with his ears raised.
Judging from the slightly cluttered sound, the invisible opponent is not a person, nor can it be a myriapod monster. The number of people is obviously plural.
The sound of gravel rubbing against the ground is made when the soles of your feet or shoes come into contact with the ground.
The sound of splashing water was caused by the soles of the feet stepping on the small puddles formed by the water dripping from the wall.
"I see, is it really the sound of footsteps?"
Realizing this, Lei Xiao nodded slightly.
Immediately, an uncontrollable doubt surged onto Lei Xiao's cheeks again.
"If that's the case, then why aren't there any energy fluctuations, breaths, or smells coming out? Could it be that it's some kind of special magical beast that's good at hiding its whereabouts? Or, could it be that the other party's strength is higher than that of Polygonum Weed and Red Night?!"
"However, even if the energy fluctuations are insensible, how can there be no flaw in the smell? You know, in terms of smell alone, the sparse Snow Wolf tribe is an extremely famous existence even on the entire continent.
.”
Thinking of this, the doubtful look on Lei Xiao's face became more obvious.
At the same time, Lei Xiao further noticed.
The source of the footsteps of the other party and others is directly opposite to our own, located on the left side of the tunnel passage.
Moreover, judging from the other party's chaotic but regular steps, it seems that he has not discovered his own presence.
In addition, because the ground inside the cave is hard and very similar to cement, it is impossible to tell the clues from the footprints.
This, to a certain extent, hid Lei Xiao and his group, and naturally also hid the other party.
"What is the opponent's background? If the opponent's strength is higher than that of Huzhang and Hongye, he will definitely be able to see the flaw in his invisibility cloak."
"Thus, since the other party did not see any of our own flaws, which means that the other party's strength has not reached the fifth level, then why are Tiger Sticks and Hong Ye unable to sense the energy fluctuations of the other party? This is simply unbelievable.
"
While Lei Xiao was thinking, the rustling footsteps gradually moved away from the group of people, until they completely disappeared in the distance of the passage from which they came.
"That's all. Since the other party has left, let's move on. Benson's whereabouts are currently unknown. We'd better find this guy first."
After making up his mind, Lei Xiao immediately contacted Aling and Bing who were guarding outside the cave through a message, reminding them to be more vigilant.
Of course, in this case, Lei Xiao did not directly remind him.
Instead, after being connected and talking for a while, he took the initiative to hang up. This was the way Lei Xiao had agreed with his subordinates to remind the other party when it was inconvenient to make a sound.
After everything was completed, Lei Xiao nodded to his subordinates and made a gesture to move on.
However, the group had just walked not far.
Something unexpected happened again.
The rustling footsteps that had completely disappeared behind the group of people actually came from the front again.