"It's really amazing!" We hadn't heard of this kind of fire before, so we didn't have any precautions, but fortunately Professor Jin came with us this time.

Professor Jin said, "Indeed! The power of this mechanism is that it is unexpected and unguardable, and it is very good in terms of anti-theft effect. But ......"

"Professor, but what?" I asked.

"However, its shortcomings are also obvious!" Professor Jin said.

"What are the drawbacks?"

"That's its disposable!" "This mechanism can only be used once, which means that it can only be used when the door or tomb is first opened, and then it is discarded. Later tomb robbers can come and go without worry. ”

"Hmm~ That means that as long as you see this kind of ambush fire, it means that no one has opened this door before?" Liang Youcai said thoughtfully.

"That's right." Professor Jin said.

"If you see it in the tomb, it means that there will be a lot of funerary goods and treasures in the tomb?" The altar immediately thought of the aspect of money, "That is, seeing fire is like seeing wealth?" ”

Professor Jin smiled: "Tomb robbers do all judge this way. ”

In fact, there are many records of ambushes in history. In the description of the Han tomb, it was written: "The four sides are involved, the east stone is outside the square, the sword household is closed first, the household is set up with the night dragon, the Mo evil sword, the ambush, and the ambush fire." ”

During the Western Han Dynasty, there were also records about the ambush fire: "After sending the tomb of the Empress Dowager Fu, hundreds of people were killed by collapse; Open Ding Ji coffin household, fire out of the flame four or five zhang, the officials to water to extinguish is to enter, burn the coffin in the utensils. "It's about Wang Mang's order to dig up the tombs of Empress Dowager Fu and Empress Dowager Ding. At that time, a serious landslide occurred during the excavation of the tomb of the Empress Dowager Fu, and hundreds of people were buried alive. When opening Ding Ji's mausoleum, a raging fire suddenly erupted from the inside, the flames were as high as four or five zhang, and the burial utensils were burned, and finally the fire was extinguished with water, so that they could enter the mausoleum, and this fire was the so-called "ambush fire".

It is also mentioned in the book that "...... And digging to more than a zhang, suddenly heard the sound of cracking, a wisp of smoke. It squirted out from the mouth of the hole, and it was about to be cooked. "The fire here is just gas, and it didn't encounter an open flame, so it wasn't ignited, and it can be regarded as the creation of the tomb robbers, so it was spared.

"Ambush fire" is not only recorded in ancient books, but also has records about "ambush fire" in contemporary times. The most famous is the No. 1 tomb of Mawangdui in Changsha, which is the tomb of Xin Chai. In 1971, a garrison of the People's Liberation Army in Changsha discovered a conical mound dozens of meters high on the north side of the road in the eastern suburbs of Changsha, so the local military hospital wanted to build an air-raid shelter under the mound to store medical supplies. When the construction crew drilled holes in the mound of earth, when the steel drill was drilled to a depth of several meters, a very strange gas ejected from the borehole, and it was like this after several holes, and the gas also emitted an unpleasant smell. At this time, there happened to be a worker next to him who lit a fire and lit a cigarette, and the gas burned up at once, and the fire was strange and strange, sometimes green, sometimes blue, and everyone present was terrified. Fortunately, there are people who know at the scene, saying that this is called "fire cave", and there must be a tomb underneath. As a result, someone reported to their superiors and inspected the place. Later, the Mawangdui Han Tomb that shocked China and foreign countries was unearthed.

"How is this fire trap set up?" Uncle Xu asked.

Professor Jin explained: "First, gases such as biogas formed after the decomposition of dead bodies burn when exposed to open flames; In addition, people deliberately place gaseous decomposition products in a limited space, and then sprinkle white phosphorus all over the door and the entire tomb roof, as long as there is a slight friction, it can cause a fire...... The second category we just encountered. ”

By this time, the fire had been extinguished for a while. We opened the stone door wide, and although it had just caught fire, there was no smell of burning, but instead there was a musty smell, which was a little disgusting.

It was after a while that the smell was gone, and we people rushed in. After all, it has just caught fire, and I don't know if the oxygen in the cave is enough, and the musty smell is also dispersed just in case.

Entering the stone gate, there is no underground palace as we imagined, but a huge naturally formed stone pit, and it is unfathomable. You can walk down from the doorway, and there is a row of simple stairs made of iron chains and wooden planks that spiral down the pit wall.

Looking at the dark pit below, although there was no wind here, there was an inexplicable chill from the bottom of the pit, which made people shudder. Seeing this situation, no one wants to go on rashly like this. Perhaps there is a terrible monster below, waiting with its mouth open for the curious to come and throw itself into the net. Of course, this is just an imagination.

We used the light in our hands to shine into the pit, but we couldn't see down at all.

Cao Fenghua confessed to the people behind: "Take a signal stick immediately!" Someone handed one in no time. He lit the baton and threw it straight down the pit.

This time, we were able to see that the bottom of the pit was about a few dozen meters away from the stone gate, but other than that, we could no longer see clearly.

"Bring me a few more!" Lu Daxun confessed to his subordinates.

Five more signal sticks were thrown. The bottom of the pit below immediately lit up a lot, and we could vaguely see some of the situation at the bottom of the pit above, as if there were some dense things laid underneath, but we still couldn't see what those things were.

"These things are obscure, not like some kind of gold or silver jewelry!" Professor Jin speculated.

"Since we've all arrived here, if we don't see it, I don't think any of us will be reconciled, right?" Mo Ji said.

I thought to myself, the most unwilling person is probably you, right? Truth be told, though, I really don't want to let go of any of the possibilities. Once there are any clues about Xu Fu below, if you miss it, you may be tantamount to giving up your life.

"Everyone should be careful when they go down, I don't know if there will be any mechanism here!" Cao Fenghua explained, "For the sake of safety, I will take a few people to open the road in front, and the road captain will take a few people to the rear of the palace, and the rest of the people will stay on it." No matter who you are, if you notice something wrong, notify you in time. ”

"I'm going down with you!" I opened my mouth and asked for help.

"Me too!" Naturally, the jar will not be separated from me.

"Then I'll go down and take a look!" Professor Jin also said.

"And our uncle and nephew!" Liang Shiyou said.