When I got to the second floor, my heart tightened.

The reason is simple, visibility is greatly reduced!

I don't know why, the dark green mist wafting on the second floor is not thicker than the first floor, but the visible distance is significantly shortened, at a glance, I can only see ten meters in front of me, beyond this distance, hazy and unclear.

What's even more terrifying is that the propagation distance of sound is also seriously reduced, and it feels like it will be absorbed by space if it travels less than twenty meters.

That is to say, even if someone screams more than 20 meters away, I can't see or hear it clearly.

The invisible energy that isolates the five senses and six senses is shrouded in the second floor, which is shocking and inexplicable.

I'm a mage, under normal circumstances, the night vision eye can see through the darkness for hundreds of meters, and the ear power is even sharper, if you concentrate, you can hear the wind and grass in the surrounding hundreds of meters, but when you enter the second floor, the perception of these aspects is seriously reduced, which makes people tremble!

"Two thousand gold, how far can you see through?" I asked.

"Yin energy is concentrated in the eyes, at most about nine meters." The two thousand gold replied, and my heart sank.

Can even the real ghost eye be affected? The environment on the second floor of the castle was so terrifying that I even had the idea of retreating.

I and Erqianjin stood there quietly, looking left and right, surrounded by green mist, as if through the gauze tent, it was becoming more and more difficult to see.

"Let Daqianjin see if you can scan the structure here?"

I groaned for a moment, signaling that, though I knew that the chances of it were slim, I still hoped it would work.

The two thousand gold agreed with my idea and ordered the big thousand gold to scan.

The figure turned into a diamond eye, releasing silver light, and after a few seconds, the silver light was retracted, and there was no specific three-dimensional map to display, and the scan failed again.

2,000 gold reluctantly put away the big gold.

"I'll try the ultrasound of the bat beast."

I thought about it for a moment and patted my purse.

The scarlet-eyed bat rushed out and landed on my shoulder, and then, twisting its neck a few times, it opened its mouth and shouted silently, as if it had completed the ultrasonic release process.

I connected with the bat beast's mind, and when I received the message, my face changed.

The ultrasonic detection of the bat beast is still a little effective, the detection radius is about fifty meters, and the distance is obviously suppressed, but it is better than me and Er Qianjin can only see the distance of about ten meters, right?

I jerked my head to look into the depths of the corridor on the right!

To be exact, looking at the bend in the corridor, there was a green mist, I couldn't see clearly, I couldn't sense the specific situation, but the ultrasound of the bat beast showed that there was an extremely condensed yin qi hidden in that location.

This means that there is a non-human head hidden there!

The ultrasound only feeds back the sum of yin energy is not low, and there is no more detailed information, I estimated it, probably a king-level yin spirit master.

A king-level yin spirit, hidden in the depths of the dense fog, makes people feel like a man's back.

Is it aimed at me and two thousand gold? If it is, it means that the five senses on the second floor are suppressed on its body and do not work.

The Yin Spirit King may be a member of the Slanting Sun Monk, using the various permissions given by Green Ink City to sneak attack.

I wrapped my mana in the sound and informed the two thousand gold of the discovery of the bat beast.

Her ghost eyes flashed, and then, her eyes asked, "Do you want to push the boat down the river and kill it?" ”

I shook my head.

As long as we don't approach the right corner, the other party will have no chance to plot against the two of us.

Exploring the source of the green mist and finding the high-level alien beasts to subdue is the purpose of me and the two thousand gold, and fighting with the ghost king here, even if we win, it will not be of any benefit.

The Ghost King and the Ghost King under the command of the Xieyang Monk must have been controlled by secret arts, and there is no way for such evil things to be subdued for their own use, so it is best to avoid it.

Besides, that guy might not be targeting the two of us, no matter who goes up to the second floor, it will sneak up, the difference is, is it close to where it is?

The bats and beasts detected each other in advance, and we can completely avoid it, so why bother ourselves?

Receiving my meaning, the two thousand gold agreed to circumvent.

In this way, the two of us silently walked towards the corridor on the left, carried the two thousand gold of the big gold, and turned to the Yin Spirit gliding mode to move forward.

At the same time, the bat beast used ultrasound to monitor the movement behind him, and the Yin Spirit King did not follow, it seems that it really didn't mean to target the two of us.

"You can detect the Ghost King, then, can you detect the Ghost King or the Master of the Heavenly Realm in advance?"

I turned my head and asked the strange beast crouching on my shoulder.

"Squeak, squeak, quack."

The wings of the bat beast flick a few times, similar to the gestures of a living person when speaking.

I connected with its thoughts, and although its expression was rudimentary and primitive, I still managed to understand the meaning of the bat.

Its ultrasonic wave is not omnipotent, the level is higher than it, or even the same level, whether it is a yin spirit or a human, or a monster or a zombie, it is difficult to find it at the first time, because the creature of that level has too strong hidden instinct.

Most of them combine their own breath with their natural environment, and ultrasonic detection used to be difficult to pinpoint.

It was a fluke that the ghost king who was hiding in the hidden place was a fluke, indicating that this ghost king's concealment ability lacked fire, and generally speaking, it was difficult for bats to detect king-level yin spirits.

In addition, some low-level creatures have unique secret methods or instinctive talents, and they can also be immune to mutated ultrasonic detection.

I nodded, I had a new understanding of the detection methods of bats and beasts, and sure enough, I couldn't rely on it completely, otherwise, someone who would not have been able to hide the ultrasonic detection, and those who were close at hand would not be discovered.

Just like on the first floor, push open the door next to it as you walk.

Ninety percent of the doors open as soon as they are pushed, and only a small part of them are locked, such a door will attract our attention, and the bats will first use ultrasonic detection to investigate, and then I and the two thousand gold will break into the door.

Most of the rooms with green walls and narrow windows are not unusual.

In a certain room, I paced in front of the window, and as far as I could see, there was a permeated green air outside, and I couldn't even see clearly outside the castle, which showed that the concentration of green fog in the castle area was always increasing during this period of time!

Erqianjin also came to the window and looked out of the window quietly.

At one point, she suddenly raised her hand and pointed.

I was just taken aback, and when I looked over, I just caught an afterimage.

The flight speed was particularly fast, and I faintly saw a claw about the size of several zhang with dark green scales flashing by!

"Is that a flying beast, or a three-dimensional phantom?"

I stared at the billowing fog, the beast behind its claws unrevealed.

"I don't know, I can't see clearly, I can't feel it, I can't hear the sound of flying, what about the feedback from bats and beasts?"

Two thousand gold looked up at my shoulder.

I spread my hands and said, "The ultrasonic wave was released, but it only penetrated a distance of five or six meters, and it was blocked back by an invisible force, as if Green Ink City noticed that we were using the bat beast to explore the environment, and we were further compressing the bat beast's detection ability." ”

"Using ultrasound probing doesn't violate the rules of the game, right?" The two thousand gold said dissatisfiedly.

"It is not explicitly stated that it is not allowed to use external forces to investigate, but Green Ink City is the party that makes the rules, and people just like to suppress the means of participants at will, who do you and I talk to?"

I'm not happy either, but it's out of line at the moment.

The mutated ultrasound of the bat beast was suppressed to a distance of five or six meters, which was not as powerful as our visual distance of ten meters.

"Humph!"

Erqianjin snorted coldly and stopped talking about this topic.