With Silas's cry, they both looked in the direction she was pointing. Sure enough, it was a round, but not absolutely regular, tunnel that could accommodate two people passing side by side.

Because it's so dark, you can't see it clearly. But Sijun himself observed this place of the lowest people, and there was indeed only one way. It seems that King Chen Tian and General Earth also entered this tunnel.

It's the first time I've been here, and he doesn't know what the road ahead is like. But it's more than a kilometer deep, and there's a lot of weirdness about that.

For example, we live in a world where the upper layer of the earth's crust is composed of granite layers (magmatic rocks), which are mainly composed of silicon-aluminum oxides, and the lower layers are basalt layers (magmatic rocks), which are mainly composed of silicon-magnesium oxides. It is theoretically believed that the temperature and pressure in the crust increase with depth, increasing by 1°C for every 100 m of depth. Drilling results in recent years have shown that at depths of more than 3 kilometres, the temperature increases by 2.5°C per 100 metres, reaching a depth of 200 °C at a depth of 11 kilometres.

Not only is the temperature not very high, but it is a little cold, which is a bit unexpected. Or maybe there is something special in this sinkhole, maybe it is this special thing that causes such a deep place to not be hot.

Sijun had already picked up 4 of the 5 glowing sticks on the ground and left one on the ground. Then he threw one hard into the tunnel. The glowing rod flicked a few times on the ground, and then lay on the ground and did not move. It glowed slightly, and although it didn't illuminate the surroundings, when it was thrown out, Sijun had already captured enough images and information.

It doesn't seem to have any mechanism. So Sijun took the remaining three glowing sticks, as well as the one attached to his body, and walked in first.

Onijuku and Silas followed suit and immediately followed.

It's a tunnel that's winding but still a straight line, and I don't know where it leads. It's just that if you look at the way this tunnel looks, it's quite artificial, and somebody has ever come down, why did they build this tunnel, and where did it lead?

There is also a suspicious point, this is a sinkhole, doesn't it say that the rumor was smashed by a meteorite in the sky? Why didn't I see this meteorite when I was in the end? But when I think about it, I understand that rumors are rumors after all, and there are no meteorites.

The three of them walked tentatively towards the front of the tunnel, because it was too dark to see the end.

Onijuku reached out and touched the wall of the tunnel, this section is relatively smooth, it really doesn't look like it is naturally formed, and you can probably guess that this tunnel was built by someone. It's just that this wall mark doesn't look like it's old, so like it was built over the years. If there are really ancients who built this tunnel and can preserve it so perfectly, then the construction technology of the ancients is really first-class.

Everyone didn't know how long they had been walking, but they vaguely saw something on the ground in front of them through the glowing rod held in front of them. So the three of them quickened their pace a little, and came to the lump of things.

When they got closer, the three of them were stunned. This is a corpse of Junnan Bee, and the three of them suddenly became nervous. How could there be a corpse of a Junnan bee here? Could it be that their battle had already begun?

Sijun trotted a few steps, and no corpses of Junnan bees were found around. How did it die here? Could it have been killed here by the general?

But it doesn't matter anymore, it means that the Heavenly King and the Earth General are indeed in front of this tunnel. The strength of the Chen Heavenly King is naturally extraordinary, but the behavior of leaving only the corpse of a Jun Nan bee is too strange. Suddenly, Sijun was also a little more worried, no matter what, he had to rush over quickly. So Sijun took the lead and quickened his pace.

I don't know how long the three of them walked, on the way they ate and replenished dry food and water, and they were all tired from walking, and finally Sijun, who walked in front, seemed to hear something.

It's dark and silent, and in this special environment, the sense of hearing is unusually developed. What's more, the slightest sound here could be heard clearly, so Sijun immediately stopped.

Onijuku and Silas took two steps forward, and Silas asked, "What's wrong?"

Sijun lowered his voice and whispered, "Shh......h Be quiet...... Did you hear anything?"

The three of them immediately fell silent, and Onijuku and Silas listened with pricked ears...... For a while, there seemed to be some faint sounds, squeaky buzzing sounds.

Sijun hurriedly took off the glowing rod on his body and threw it on the ground with the three. Onisu and Silas also took off their glowing sticks and put them on the ground.

The three of them smeared, slowly, quietly followed the sound to the front of the tunnel.

They didn't go far before they noticed some light in front of the tunnel, and the three of them held their breath, hid their breath, and slowly approached the light.

I saw that the light in front of me seemed to be emitted from a space. The three of them did not dare to move forward, so they had to lean against the entrance of the cave to observe.

It's a shame, there are hundreds of Junnan bees crowded around this place...... And this place is like a fairyland.

It is a place the size of two basketball courts, with a 1-meter-wide river on the ground, and there are many planktonic and sesame-sized creatures in the river. And these blue-blue lights are emitted from them. The dark space was illuminated clearly, and the sound I heard just now was the sound of the river.

And this underground river water exudes an icy chill, and it seems that the cold breath below is emitted by this river water. Just by feeling it, you can imagine how cold the river is.

Because of these glowing plankton and small creatures, you can see it very clearly. The water came out of a spring underground, then twisted and stretched into the distance, and finally melted into a tunnel that was the same as the pitch black one in the other direction.

It's just that to the surprise of the three of them, there are hundreds of Junnan bees here, and they are all neatly looking at the tunnel in the direction of the flow of the glowing river. Why are they all here? Could it be that the general ordered them to be on standby here!?

In that tunnel with a glowing river, it must be where the Tatsu Heavenly King and the Earth General are located. But after all, there are so many Junnan bees here, how can they enter which tunnel?

It's impossible to kill all of these Junnan bees, not to mention how difficult the battle is, even if you kill them all, it will take some time.

Mi-kun looked at the ghost house very seriously, and the ghost looked at the situation in front of him, of course he understood what he meant, he used an exhalation-like voice, and said in a low voice, "I may not be able to get around it......"

Sijun also exhaled, "As long as you don't let them ventilate and report the news, you can kill them all here." ”

Onisu still sighed in a low voice, "It's still difficult...... At least one person must rush to the tunnel door to block ......"

Sijun nodded and whispered, "I have a way to ......"