While Zhou Xiaolong and Jin Hui were talking, over there, under the command of the black fox, there were already two men in black who set up a metal wheel at the entrance of the cave.

It resembled the reel on the top of the wellhead earlier, with a tough wire rope wrapped around it, and a metal basket tied to one end, just enough to fit into the cave.

A man in black crouched down, threw a thermometer-like instrument into the metal basket, put it into the cave, and shook the wire rope, and the metal basket slowly descended towards the bottom of the cave.

"This is an environmental measuring instrument, which is an instrument that combines air humidity, gas composition, air temperature and altitude." Jin Hui saw Zhou Xiaolong's doubts and explained aloud.

"Environmental meter? It's really high-tech! Zhou Xiaolong sighed when he heard Jin Hui's explanation.

If those tomb robbers had such advanced equipment in the past, where would they need to put a duck into the cave to find out the air circulation in the cave, technology is really changing with each passing day!

Everyone watched for a while, and the ropes on the wheels became less, and the wire ropes were constantly being lowered, as if the cave was a bottomless abyss.

Zhou Xiaolong followed Jin Hui into the cave, and when he looked down, the dark cave was bottomless, and there was such a long rope that seemed to be in the end.

Probably no one knows how deep this cave is, but the black fox said that the wire ropes have gone down more than 500 meters long, so deep, it has not even reached the end, and everyone's hearts have been lifted.

"No, could it be that this is another bottomless pit?!" Jin Hui was the first person who couldn't hold his breath and grinned.

Of course, Zhou Xiaolong knew the meaning of Jin Hui's words, because he had discovered a similar bottomless pit in Savage Mountain before.

However, just as Jin Hui finished speaking, the reel and the wire rope suddenly stopped turning.

The man in black who controlled the wheel shouted excitedly, "Look, in the end, the wire is no longer moving!! ”

Zhou Xiaolong glanced back at the numbers on the calculation pulley, and the cave was indeed more than five hundred meters deep.

This situation was beyond Zhou Xiaolong's expectations, such a deep cave, and the entrance of the cave was narrow, in case there were really any dangerous creatures underneath, such as pythons and the like, there would not be enough space to deal with it if they wanted to escape.

However, the black fox said that the data on the environmental measuring instrument shows that the air in this cave has enough oxygen, and there are no other gases harmful to the human body, and it is safe for people to go down.

In order to be safe, before people go down, Jin Hui asked to put an unmanned camera into the cave to explore the way.

"Hurry up, put the camera down first, and survey the situation at the bottom of the cave!" Immediately, the black fox commanded again to the two men in black.

Zhou Xiaolong now finally knew what was hidden in some of the big backpacks that those men in black were carrying.

Soon, the man in black opened his backpack and took out a tablet, a miniature camera, and a remote-controlled drone.

It is said that this drone can fly and walk on the ground, a small robot that can be used both on land and air, and can even dive.

The man in black skillfully connected all the devices, and the drone entered the cave little by little, saying that the effective range of the drone was one kilometer.

After the drone and camera were lowered to the bottom of the cave, several people gathered in front of the display screen to watch the footage transmitted by the camera.

I saw that the width in front of this cave was the same as the entrance of the cave, only for one person to go down, the walls were rocky, and after two hundred meters, the cave gradually widened.

When the camera reached the bottom of the cave, everyone finally got a clear view of the inside of the cave.

The cave is a bit like a nest shape, narrow at the top and wide at the bottom, and the drone carrying the camera flies out of the metal basket under the control of a professional, and slowly flies towards the darkness inside.

Jin Hui was half-squatting, holding a white paper book on the knees of his legs, and while watching the video that had been transmitted, he was holding a pen and drawing something on the paper.

Zhou Xiaolong glanced at it, and he understood, knowing that Jin Hui was drawing a rough map of the cave ** according to some pictures on the monitor.

The black fox looked more serious than Jin Hui, staring at the flat panel display almost without blinking, and suddenly, he said to the person controlling the drone: "Wait, don't move the camera, go back a little longer, the camera turns back in the direction just now, I really want to see something......"

Jin Hui paid attention to the display screen while drawing, and he didn't look as carefully as the black fox, and when he heard the black fox say, he was also suddenly stunned.

Put down the record book, Jin Hui and the black fox stared at the display screen carefully, at this time, the camera also started shooting back according to the black fox's requirements, and soon, I saw a white object in the corner of the bottom of the hole, just the drone flew over it, the camera just scanned, and the shot was not very clear.

The man in black who controlled the equipment didn't find it, but fortunately, the black fox did.

"What's that?!"

"The camera turns to the left, and the lights turn to see what it is?!"

"Don't rush, take your time!"

Several men in black were gossiping, and after the drone landed, they began to drive towards the white object in the corner.

Soon, without Jin Hui and Black Fox's orders, the person who controlled the camera also saw the abnormality.

When the camera got closer to the white object, everyone finally cleared what it was, it was a completely decomposed corpse with only skeletons left, and sat quietly in the corner.

This...... How can there be a white skeleton!!???

The black fox seemed to be a little flustered, and he said to Jin Hui: "If there is a corpse in this cave, will it be stolen, then what we are looking for, isn't it ......?"

Jin Hui frowned before he said, "Since it is already a corpse, this means that the person died inside and did not come out, and if there is something, it may not be able to be brought out......"

The black fox breathed a sigh of relief, nodded and said to Jin Hui, "Well, what you said also makes sense. ”

Zhou Xiaolong had been standing behind the two people, and he could see it clearly, when the camera moved to the front of the skeleton, it seemed that the position of the skeleton's mandible seemed to be a little distorted.

This seems to indicate that the deceased was in great pain before he died.

Zhou Xiaolong vaguely felt that there seemed to be something wrong with this, but the twisted bones didn't mean anything, since everyone died, it must be more painful, otherwise they wouldn't have died.

At this moment, the camera had turned away again and continued to explore the situation in the depths of the cave, so Zhou Xiaolong had to temporarily suppress the doubts in his heart and observe the picture transmitted by the camera more carefully.

(End of chapter)