That year, my grandfather, Qingyi Taoist, traveled the world and passed through Zibo. Linzi, the capital of Qi during the Warring States Period, was once located there, so it was full of ancient tombs, and most of them were from the Warring States Period. If there is an ancient tomb, there will be tomb robbers, and the two are the cause and effect, so tomb robberies happen from time to time.

When my grandfather arrived in Zibo, he met a few people carrying another person and hurried to the doctor, as if he was seriously ill. As several people passed him, he glanced at the patient and immediately noticed something different. Grandfather saw that the man's eyes were rolled up, his face was blue, and his mouth was foaming at the mouth, it was indeed like he had some kind of emergency, but his eyebrows were scorched, his face was cold and cloudy, and his body was full of yin qi, which was more like being haunted by yin spirits. Qingyi remained silent, just quietly followed behind a few people. When they came out of the doctor's place, they were no longer in the same hurry as before, but drooped their heads, obviously with no hope. Only then did my grandfather come forward, and after asking, he learned that this person had a sudden emergency when he returned home, so his family hurriedly sent him to the hospital. As for why he is like this, his family can't say. But when asked what he was doing, several people were speechless, as if there was something unspeakable. No matter how much the grandfather asked, several people just kept silent. In the end, the grandfather shook his head helplessly, took out a porcelain bottle from his arms, poured out a pill, and asked for a bowl of water from the surrounding shops to melt and feed it to the man.

I saw that after the man drank the potion, in less than a moment, his whole body trembled, and then he spit out a lot of black liquid, and gradually came to his senses. The men hurriedly thanked them, but their grandfather told them that the medicine was only a palliative, not a cure, and that they had to tell him the truth how this man had provoked this ghost. Although the sick man was weak, he was still conscious, and when he saw that his life was at stake, he hurriedly told his grandfather what had happened.

It turned out that this person's name was Sun Yuxiang, a tomb robber who was active near Zibo all year round, looking for ancient tombs and waiting for opportunities to attack. This time, he and his two cousins went to "get alive" and found an ancient tomb from the Warring States period. The tomb was well preserved, and no one had touched it before them. Originally, Sun Yuxiang was on it, and he didn't need to go to the tomb, but there seemed to be nothing in this tomb, so in order not to go empty, the three decided to open the coffin. But when the coffin was opened, the three of them were stunned, except for a corpse, it was full of all kinds of treasures.

The three of them went crazy and put the jewels into their arms, and no one noticed that the candle placed at the entrance of the cave had been quietly extinguished.

"Fire candles? What candles? When Tanzi heard this, he suddenly interjected and asked.

I explained to the altar according to the record in the book: "I heard that Sun Yuxiang said, it is an unwritten rule handed down from ancient times to light a candle at the entrance when robbing the tomb, if the candle is not extinguished, you can take away the things in the tomb, if it is extinguished, you must leave the tomb quickly, and you cannot take away a cent from the tomb, it is said that this is an agreement between the living and the dead." ”

The altar looked surprised: "Really fake?" Is it so evil? ”

I spread my hands: "I don't know if it's true or not, that's what the book says." ”

The altar asked, "What about you?" Do you believe it or not? ”

I shook my head: "I don't believe it! Where are there any ghosts or gods in the world? The so-called agreement is nothing more than a way for tomb robbers to exchange peace of mind. Even if there was such an agreement, if you were the owner of the tomb, would you be willing for someone else to take what belonged to you? ”

The head of the jar shook like a rattle: "Unwilling, unwilling!" Why should my treasure be given to anyone else for no reason, let alone the one who digs my grave, unless I am kicked in the head by a donkey. ”

I shrugged my shoulders: "That's it!" So~ I said, this is nothing more than nonsense. ”

Glasses lifted the glasses on the bridge of his nose and said, "Not exactly, there is still a certain scientific basis for this practice of robbing tombs and lighting candles." ”

"Oh?" The altar and I immediately became interested, "Is there really some ghost, god?" ”

"Not really, but although this candle is under the banner of ghosts and gods, it has a practical purpose. ”

"What is it for?"

"Tomb robbing is mostly invisible, so it usually happens at night, especially after going down to the tomb, and a lamp is needed to illuminate it," he said. Then there is the ancient tomb buried in the ground a few meters or even more than ten meters of place, closed for a long time, less than decades or more than thousands of years, the air in the tomb has not circulated for a long time, coupled with the coffin, the corpse decayed into the existence of toxic and harmful gases, so the ancient tomb must not trespass, must be fully prepared, such as gas masks or something, it is best to have gas analysis instruments. ”

The jar was a little speechless: "Toxic and harmful gases? It's like a textbook. What about gas analysis instruments? If I can afford this, I still have to rob the tomb? I didn't take it to pay off the debt sooner? Besides, did those tomb robbers also prepare gas masks and gas analysis instruments? ”

Glasses smiled: "That's not the case...... However, it is precisely because there is no reason why it is important to rob the tomb and light the candle. At such a deep underground, there is no ventilation, so oxygen in the tomb is very scarce. Relying only on the holes dug by tomb robbers for air circulation is not effective, so the lack of oxygen in the tomb occurs from time to time. Therefore, in such rudimentary conditions, it is necessary to set up a lit candle to monitor the oxygen content in the burial chamber, once the oxygen supply is insufficient, the candle will be extinguished, and if it is not withdrawn in time, there will be a possibility of hypoxic suffocation. The ancients could not explain this phenomenon, so they could only put it on the ghosts and gods, which only added a bit of mystery to the tomb robbery. ”

"So that's the case~" The altar showed a look like this, and then he turned his head and urged me to say, "Go on!" What about after the candle is extinguished? What happened again? ”

"Not long after the candle was extinguished, Sun Yuxiang heard the two cousins breathing rapidly, and then they fell to the ground after hearing them scream......"

Sun Yuxiang hurriedly stepped forward to check, only to see his two cousins with their mouths wide open, their tongues spitting out, their eyes wide open, and their hands holding their necks vigorously, seeing that they were about to lose their breath. Sun Yuxiang hurriedly helped, wanting to separate the hands of one of his cousins, but his hands were as strong as a vice, no matter how hard Sun Yuxiang tried, he just didn't move. Soon his two cousins died one after another. At this time, Sun Yuxiang saw that the candle at the entrance of the thief cave had been extinguished, so he didn't think about it, he ran away, and at the moment he left the tomb, he seemed to hear the shallow laughter of a woman behind him......