Seeing that all the work was going smoothly was a little unimaginable, Professor Chen became uneasy, and said to Zhang Gong in a worried tone: "Lao Zhang, I'm still a little worried, you use the snake camera to take a closer look behind the door, there should be clues." ”

"Okay, the triggers are hidden out of sight, I'll look behind the door now." After speaking, Zhang Gong took out the snake camera from the box behind him and gently stuffed it through the crack in the door.

Through the serpentine camera, it was found that there was a stone bar with grooves behind the stone door on top of the two doors, and the sides of the doors were smooth without any problems.

"There is no trigger mechanism in the back, and the danger that is not found is the biggest danger, we will study and study it again," Professor Chen looked at the display screen and arranged: "This tap stone is quite ordinary, Lao Zhang, you draw a sketch and let them quickly use steel bars to make a crutch key to open the tap stone, and then we will find the trigger point of the mechanism." ”

Zhang Gong carefully looked at the size of the tap stone behind the stone door through the snake camera, drew a diagram of the key to the crutch in the notebook, and marked the specific parameters, and after a while, a key to open the stone door was drawn.

After Zhang Gong handed over the key map to Feng Weiguo and instructed him to quench it, he continued to carefully observe the back of the stone gate with a snake camera. When I saw a door on the right side of the top of the stone, I finally discovered the mystery, the wedge of the stone door on the top of the stone was not one, but a certain distance to move, about two centimeters of the trip, but this activity itinerary will not let the door be pushed open a large gap, and it is even more impossible to be opened. There is a wooden stick on the wedge that goes all the way to the top of the door, and there is a lever on the door and the door frame, as long as you blindly push the stone door from the outside, the running stone behind will lift the wooden stick on the door to pry the wooden stick mounted on the door frame, and then use the wooden stick to trigger the mechanism in the wall.

After knowing the trigger principle of the mechanism, everyone was much more relaxed, and Professor Chen and the others carefully studied the carving on the door. The carvings on the doors on both sides are ancient mythical beasts: the green dragon, the white tiger, the vermilion bird and the Xuanwu, and the states are: the flying green dragon, the hunting white tiger, the walking vermilion bird, and the crawling Xuanwu.

Feng Weiguo looked at it for a long time and said: "The four elephants in traditional culture all correspond to the direction of the twenty-eight houses, Professor Chen, do the four divine beasts on this stone gate also hint at us?" Or is it just a craft decoration? ”

Professor Chen replied: "The term decoration cannot be ruled out, according to the current arrangement above, the left side is the green dragon and the vermilion bird, the right side is the white tiger and the Xuanwu, and now it is to see that the heads of the three divine beasts are facing each other, I think if you hint, this is the most likely point." ”

Zhu Gong also participated in the discussion, he said: "If you imagine that these are four of the five beasts of Tianguan, and the lack of Huanglong is Yinglong, that is, the lack of middle, and at the same time, Huanglong also represents the royal family, and the lack of Huanglong means that the owner of this tomb is not a royal family; The green dragon represents the direction of the east, the red bird is the south, the white tiger is the west, the Xuanwu is the north, according to the current arrangement, the left is the green dragon and the red bird, that is, the east and the south, the right is the white tiger and the Xuanwu, that is, the west and the north, missing the middle, except for the red bird is the flying posture, the head is facing the sky, that is, facing the green dragon, facing the east, the other three are relative, I think this doubt is very big. ”

Feng Weiguo continued to ask: "Zhu Gong, do you mean that we are now standing in the south, and the direction of entry is south to north, if according to the current hint, it is a place where you can't go straight in the middle, you have to turn the east, and then go north to west to east?" ”

"The early four divine beasts are four elephants, simply representing the four directions of the southeast, northwest and northwest, and it evolved into twenty-eight houses in the Spring and Autumn Period, which is the astronomical crystallization at that time, and the carvings of the four beasts are relatively simple, if you want to correspond to the twenty-eight houses, then you need to use too many elements in these carvings, but there is very little information that can be interpreted for us, a little rough, I personally think it is not very implicated, so I also think it is the hint you said."

"If it's a hint, it means that there is a route behind the door?"

"Maybe, but according to the current Yongdao, it is almost impossible for us to choose, after all, the place is restricted, and we can't open that kind of route layout, and these can only be observed step by step after entering."

Discussion, Lao Ma sent the key to make crutches on the construction site, Zhang Gong measured the size with a ruler to confirm that they all met his requirements, and said to everyone: "For safety, you all retreat outside, I can do it alone." ”

Seeing that everyone had retreated outside, Zhang Gong put the snake camera on the ground after turning it on, and after aiming the angle at the tap stone inside, he stretched out the crutch key made of steel bars from the crack in the door, carefully lassoed the upper part of the tap stone groove, and turned around and nodded firmly to Professor Chen not far away, and then Lao Zhang held his breath and slowly pushed the crutch key in, watching the black and shiny steel bar slowly enter after quenching, Lao Zhang's nervous forehead also began to ooze a slight sweat. Although everyone couldn't see what was going on inside, they all felt the unknown danger, and they all held their breath and quietly watched outside.

As the crutch key continued to enter, the tap stone inside was naturally standing vertically behind the stone door. Hearing that there was nothing abnormal inside, Lao Zhang slowly took off the crutch key, and gently tried to push down the door, but did not push, and there was no abnormality, Zhang Gong breathed a sigh of relief, and slightly increased his strength to push, the door moved in the "buzzing" sound, and the door was pushed open a small crack, or no mechanism was triggered; Lao Zhang continued to push the door on the right side hard, and opened the door on the right side completely, seeing that there was still no abnormality, so he turned around and let the door on the left side open as well. The doors were all opened, and nothing unusual happened.

Under the instructions of Lao Zhang, the electrician master drove the iron bar into the gap, and added two lamps to the passage, with the light to push the line of sight forward, at this time the secret behind the stone door has been thoroughly understood by everyone, the so-called tap stone is actually a stone bar with a groove in the middle, and there is a groove below the tap stone, which is used to make the base of the tap stone.

After consulting Vice Mayor Zhao's opinion, Lao Zhang used the telescopic rod to push down the lever on the top of his head, and in an instant, dozens of wooden arrows flew out of the wall, all of which were forcefully pierced into the pre-laid planks. Qin Gong looked at the black arrow body, and then looked at the dark red arrow seriously, and said to Feng Weiguo: "Director Feng, this arrow may be highly poisonous, be careful when taking it, don't scratch it." ”

"Well, you will definitely be careful, thank you Qin Gong for your guidance." After speaking, Feng Weiguo arranged for someone to carry these wooden planks to the headquarters of the tunnel, and then take them down and put them in the museum at night, which is the first cultural relics that can be moved from excavation.

When everyone had quieted down, Ma Kai and Zhang Gong continued to start the crevice detection work, and no abnormal structures were found until the end of the corridor, and the corridor was safe.