I nodded, looked at the wall of ice crystals in front of me again, and drew my black knife.

"This ice crystal wall looks transparent, and I don't know how thick it is......"

With a few words, I began to chisel the ice crystal wall in front of me with the black knife in my hand, but what I didn't expect was that before I could chisel a few times, a small hole opened in the ice crystal wall in front of me......

Yes, I didn't smash it a few times, and a small hole opened in the ice crystal wall in front of us, it seems that this ice crystal wall is not as thick as I thought, or this ice crystal wall is much thinner than the other walls of this ice crystal tunnel...... Wait a minute.

"Ahh......h Isn't it possible that the ice crystal wall against which this city is leaning on has no city wall in the first place, but the previous ice crystal wall is too thick, we can't see it, right? ”

I raised my eyebrows and looked at Yun Haisheng and Fang Jin, and the two of them shrugged their shoulders.

Without much thought, I glanced through the small hole I had smashed with the black knife and looked at the situation in the ice crystal wall.

Sure enough, it is a boxy man-made building, the building is stone, it is a stone room, but this stone room looks a little special, especially the direction behind the ice crystal wall, there is a bronze high platform, and there is an incense burner on the high platform, as if it was a place of sacrifice in ancient times......

But why do you want to sacrifice to this ice crystal wall?

Of course I didn't understand, Fang Jin and Yun Haisheng beside me urged again, asking me to smash open the first ice crystal wall, and let's go in and talk.

I nodded and didn't think much about it, and continued to smash the ice crystal wall with the black knife until I smashed a large circular hole in the ice crystal wall that could be passed through, and then I got into the stone chamber on the other side of the ice crystal wall with Fang Jin and Yun Haisheng.

For a while, there was a strong smell of dust and dust in my breath, and I quickly asked Yun Haisheng and Fang Jin to tear off the corners of their clothes and tie them between their noses, because in this way, this stone room is no better than the ice crystal secret channel, the ice crystal secret channel is just blocked by heavy snow, and this stone room should have been closed and has not been opened, so there will be such a strong dust in this stone room.

Of course, inhaling too much dust can cause many physical hazards, so cover your nose with clothing to at least filter it out.

After covering the wing of his nose with the corner of his clothes, he looked around and looked around the entire enclosed stone chamber.

Boxy, almost a hundred square meters, completely stone, there is a candlestick in the corner of one side, and there is a fire on the candlestick, but the ethereal smoke on the fire is actually black...... Wait a minute!

As soon as my heart moved, I pulled Fang Jin and Yun Haisheng and pasted them on the wall on the side of the stone room.

"What's wrong?"

Fang Jin beside him opened his mouth in a low voice.

"If there is a fire, it means that someone has been here......"

I replied, wide-eyed and carefully surveyed the surroundings of the stone chamber.

However, at this moment, Yun Haisheng on the other side stared straight at the black smoke candlestick burning in the corner of the stone room, and regardless of my obstruction, he walked directly towards the black smoke candlestick.

"Be careful!"

I growled, anxious, of course.

This isolated monument must have been built in a very old age, so there must be only one possibility that there is a candle flame in this monument, that is, someone entered this monument and lit the candlestick.

And the time for a candle to burn continuously is only a few days, which means that in the past few days, someone has entered this stone chamber, of course, 'in these days', including the last minute......

However, Yun Haisheng didn't seem to hear my low roar, and still walked quickly towards the candlestick in the corner of the stone room, until he stood still in front of the candlestick, followed by silence for a moment, and looked back at me and Fang Jin who were leaning against the wall on the other side.

"This candle flame will not be extinguished......"

Yun Haisheng shook his head slightly at me and Fang Jin, I looked at Fang Jin the same, of course with a confused expression.

"Yun Haisheng, do you mean that this candle flame has been burning in this monument and has never been extinguished? How can it be? ”

I stared at Yun Haisheng and frowned, of course I couldn't believe it.

"Yes......"

Yun Haisheng nodded again, and turned to wave towards the candle flame.

For a while, the candle flame emitting black smoke flickered, but no matter how Yun Haisheng fanned the wind, there was no sign of extinguishing it.

Yes! Although the flames are swaying, the center of the fire is still stable, as if it will not be changed by external forces to weaken the fire.

I was amazed, and after carefully looking at the entire stone room again, and after making sure that there was indeed no abnormality, I went to Yun Haisheng's side with Fang Jin, and also looked at the candlestick with black smoke in the corner of the stone room.

There is nothing special, it is a candelabra in the shape of a rice bowl, and in the 'bowl' below the candelabra, there is half a bowl of black oil, and the fire candle above the candelabra is burning at the upper end of the rope that invades the black oil, which should be the same principle as the kerosene lamp.

"Won't go out?"

I muttered and glanced at Yun Haisheng on the side, and Yun Haisheng stretched out his hand towards the candlestick, motioning for me to verify it myself.

I didn't say much, I also stretched out my hand and fanned the candle flame on the candlestick rope, and the result was just like when the clouds fanned before, although the candle flame kept swaying with my fan, it was never extinguished, and even the fire did not weaken in any way in my fan.

"How is that possible?"

Of course I was surprised, Fang Jin next to me blew directly at the candlestick, and after only blowing once, he was stopped by Yun Haisheng.

"Be careful! Once you blow the shark oil on the candlestick and set it on fire, the whole city may be finished! ”

"It's not that serious, is it?"

Fang Jin stared at Yun Haisheng and frowned, but I noticed the point in Yun Haisheng's words.

"Shark oil? What is Shark Oil? ”

Yun Haisheng glanced at me, let go of the hand that was blocking Fang Jin, and looked at the candlestick in front of us again.

"Throughout the ages, there have been examples of the use of everlasting lamps in the tombs of emperors.

Some use special materials, such as slow-burning beeswax, as a raw material for the lantern, but it does not last long.

Others use tactics such as sprinkling white phosphorus on the lantern and sealing the tomb.

In this way, the lantern burns, and the oxygen in the tomb will be extinguished after burning, and when someone opens the tomb and the oxygen enters the mausoleum, the white phosphorus in the lantern will spontaneously combust to cause the lantern to burn, giving the tomb opener the illusion that the lantern will not be extinguished for thousands of years. ”

"So which kind of shark oil does it belong to?"

I stared at Yun Haisheng and raised my eyebrows, but Yun Haisheng shook his head slightly.

"Shark oil is the third, the real thousand-year-old immortal ......"

"The real millennium immortality?"

I frowned slightly, and Yun Haisheng nodded again.

"There are clouds in the historical records, and the mermaid paste is used as a candle, and those who are immortal will not be extinguished for a long time.

The mermaid is the shark, and the shark oil is the oil refined from the mermaid. ”

"Grass, mermaid?"

I stared at Yun Haisheng, and I was about to say, 'Do you think I look like a three-year-old child?', but I swallowed it back before I could say it, because I thought of those half-human, half-fish scaly monsters on the sea......

There are half-man, half-fish, fish with human eyes, and even crocodiles and snakes with human legs, so maybe there are really legendary mermaids......

"The merman has always been a legend on the sea, and I have only heard it in legends, but the candle flame in front of us will never be fake, and it must be the shark oil ...... burning."

Yun Haisheng shook his head slightly, and turned to look in the direction of the ice crystal wall when we came out.

Because at this time, when we look at the ice crystal wall when we enter, we can see that this ice crystal wall is really weird......

Yes! It can only be described as weird, because in front of this ice crystal wall, there is a bronze high platform, on which there are sacrificial items such as incense burners, but there is nothing on the ice crystal wall, that is to say, what is sacrificed on this high platform is the ice crystal wall that we drilled out......

Not bad!

Generally, no matter what is sacrificed, the sacrificial object will be placed in front of the altar, such as the spiritual seat or the remains.

And in front of the altar in this stone room, there is only a transparent ice crystal wall, and other than that, there is nothing, that is to say, this high platform is sacrificed to the ice crystal wall that we drilled into.

But how could anyone sacrifice a wall?

Of course I couldn't figure it out, Yun Haisheng beside me shook his head slightly.

"Maybe the people in this city at that time were not sacrificing the ice crystal wall, but the shining thing in the ice crystal tunnel......"

As I listened, my heart moved.

That's right! The shining thing in this ice crystal secret passage protects the entire isolated island city from being captured by scale monsters, so it is of course reasonable for the people in this isolated island city to sacrifice the shining things in this ice crystal secret tunnel.

"Okay, okay......"

Just as he was thinking about it, Fang Jin on the side waved his hand again and stared straight at me.

"That's the end of archaeological time, let's not forget what we're here for."

I nodded when I heard this, and I didn't look at the altar and the shark oil lamp in the stone room anymore, but groped around in the stone room with Fang Jin and Yun Haisheng, of course, looking for a way to get out.

Fang Jin is right, no matter what happens to the shark oil lamp and altar in this stone room, the purpose of our coming to this city will not change, that is, to rescue my sister and catch the murderer of the missing case, that is, the woman in red in the video.

After groping around the stone chamber and searching, he finally found a square stone door outline hidden in the stone wall on the stone wall to the left of the stone room, and on the stone wall on the side of the stone door outline, there was also an unlit lampstand, and it was obvious that this lampstand was the mechanism for the secret door to open.

He glanced at Fang Jin Yunhaisheng, nodded and then grabbed the lampstand for a while, and finally after rotating the lampstand, the outline of the stone gate in front of us came with a "click", and the outline of the stone door also protruded, and opened a line of gaps.