Because Nice's weight was very heavy, and he was caught off guard by this trip, he used all his strength to grab the knocker and pull it down, and after the knocker was pulled down, a baffle fell from the head of the statue, blocking the round hole formed by the relief sculpture's wide mouth, and it looked like the relief itself closed its mouth, and at the same time the two nostrils of the relief sculpture were blocked.

Immediately after, there was a rumbling sound from behind the green gate. The whole gate shook suddenly, and some floating soil and small gravel on the wall around the gate fell one after another, and the eight people in front of the gate were startled, and hurriedly hid behind the desperate Saburo, staring nervously in the direction of the gate.

With a rumbling sound and falling sand, the gate slowly rotates 90 degrees with the relief statue on the door as the central axis. The door slowly opened, revealing a dark space behind it.

Because there is always a hole in the gate that communicates with the outside world, the air pressure inside and outside the gate is the same, and after the gate is opened, there is no phenomenon of cold air blowing out inside. And the black fog behind the door also hung there. However, the green light on the air detector in the hands of the two technicians suddenly turned yellow.

Fortunately, the indicator light on the air detector only turns yellow and not red, which proves that the gas here needs to be filtered before it can be used, and if the indicator light on the air detector turns red, everyone must switch the gas mask from the filter mode to the oxygen mode, and rely on oxygen to maintain life.

Because of the wind and sand, everyone's gas masks have not been taken off, which saves a lot of things at this time. At this time, Chen Ziyang figured out that he estimated that the mysterious ball before was like a key, opening the door, but because after putting in the ball, no one pulled the knocker on the door, so after waiting for a long time, the defense mechanism of this gate was activated, and black gas spewed out from the nostrils and mouth of the relief statue.

If you want to open the door, you have to pull the knocker, it's such a simple truth, but it blocked everyone for hours, looking at the open door in front of you, all the people were a little crying and laughing, this is really interesting, if it weren't for Nice inadvertently stumbling this fall, maybe they would only have the only way to go by breaking the door violently.

Seeing that there was no abnormal phenomenon after the gate was opened, the eight people explored the path in front with a detector and opened the way with Desperate Saburo, and they followed behind Desperate Saburo and cautiously walked into the gate.

There is a lot of space behind the gate, which has been known through the detection of the previous probe, and from time to time there is a small pool of black water on the ground, and there are also clouds of black mist suspended in the air. The black mist hung there and swayed slightly, looking like piles of small mosquitoes gathered by the water's edge in summer.

Chen Ziyang estimated that this black water should be the same as the black water contained in the urn coffin where he found the mysterious ball. If you look closely, this black water seems to be different from the black water that has been precipitated from the mysterious sphere.

The black water that appears in the ball is less viscous, like water, and the color is more transparent, not so turbid. The black water on the ground is very viscous and turbid, and the tension on the surface is very large, looking like piles of asphalt.

Everyone carefully avoided the black water on the ground and the black mist floating in the air, and slowly walked forward. Because of the large size of Desperate Saburo, when Desperate Saburo was moving forward, he inevitably got a lot of black water on the track.

At the beginning, Chen Ziyang was worried that this kind of black water was particularly corrosive and would melt the tracks of Desperate Saburo, but after advancing for a few minutes, there was nothing unusual about Desperate Saburo's tracks. Thinking about it, the urn coffin containing these black water has not been corroded away for so many years, how can the special tracks of Desperate Saburo be so easily damaged. It seems that this viscous black water and the black water that has been precipitated from the mysterious sphere are two different substances.

This space is very large, but judging from the terrain outside, the space should not be very high, but the black mist here can actually absorb light, and the bright flashlight beam cannot penetrate it.

Chen Ziyang has been looking at the ground left and right, hoping to find the mysterious ball, but he is very strange, whether it is the detection of the detector before, or the search of these people, there is no trace of any standard ball, I don't know where this ball ran after passing through the hole in the gate?

Recalling the scene when the ball rolled upwards by itself, Chen Ziyang felt as if the ball had grown legs, and it was not surprising that it could not be found here.

The probe had already surveyed the surrounding area of fifty meters before, and did not find anything abnormal, so the group quickly passed through the fifty meters of the area that had been detected, and instead cautiously continued to detect while continuing to move forward.

At this time, the picture transmitted back by the detector in front of the laptop suddenly shook violently, and if you look closely, it seems that the detector is turning its head and spinning up and down, and suddenly there is a signal on the screen that the signal connection is interrupted. It appears that either the detector in front of it is damaged, or it is out of range of fifty meters.

It wasn't until the eight people were extremely careful that they advanced a few dozen meters before they knew the reason why the probe was rolling, and it turned out to be that it had fallen down the steps in front of everyone.

Just in front of everyone's feet, there are sections of black steps, these steps seem to be made of volcanic rock, there is a potted hole on it, and at the same time the whole is pitch black, it is no wonder that the detector did not find it in time in this dark hole.

The probe must have rolled to the bottom of the steps, which can be analyzed from the last footage of the probe, but the two technicians standing at the top of the stairs still did not receive the signal from the probe, could it be that the length of these steps extended more than 50 meters? That's how many steps are there!

Moreover, until now, everyone has not found the boundary between the left and right in this space, which means that this kind of black staircase not only has a very large number of steps, but also extends very long downward, and the distance between the left and right is also very wide.

After roughly estimating the amount of work to build this place in his heart, Chen Ziyang was surprised, this place is definitely not simple.

After discussion, Liu Cong and Chen Ziyang decided to go to the bottom of the stairs to take a look first, after all, they don't know where to go now, not to mention the existence of a detector at the bottom of the stairs, and everyone may be much safer if they find the detector back.

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