Xiao Fei suddenly had an idea and said: "There is no other way now, it seems that we can only hurry to the black grave just now, regardless of whether it has a way out, this is our only way, the only way." Hu Jiaojiao was scared just now, but now she saw those dense black-clothed chasers, and couldn't wait to say: "Now it's really only according to what Xiao Feige said, thirty-six strategies, and going is the best policy, it seems that we really have a fate with this tomb, and we have to go in once." ”

We all feel that Xiao Fei is reasonable, and there is no other effective way, so we have no choice but to hurry to the stone city to run, while running without losing the opportunity to look around this ancient stone city, this stone city is quite large, only to see that its structure can be roughly divided into two parts, the inner city is relatively intact, the majesty of the ancient castle still exists, it is mainly the royal palace, composed of the government, the residence of military and political officials and the Buddhist temple. The inner city is built from the foot of the stone mound, and is as high as the top, large and small at the bottom, forming a magnificent castle tower. The city wall is made of mud and stones, and most of the city walls, battlements, female walls, corner towers, saucer holes and the northeast corner gate are still well preserved, and there is no damage in autumn, standing tall, even if it is a light effort, it is difficult to fly out, and in addition to the inner city wall doubles as a house wall, you can see the shrine, Outside the closet and chimney channel, all the buildings in the city have collapsed, the ground is covered with stones, and there are still a small number of boulders and earthen walls, it is really a magnificent and reasonably designed stone city, but those men in black chased very closely, and we didn't have time to take a closer look, so we quickly opened the mechanism, took the lead, and jumped down impatiently.

I only heard the menacing men in black outside: "It's really strange, just now we were chasing here, why are they gone, and the cooked duck flew away?" Another man in black said: "I guess there must be a mechanism here, everyone hurry around to look around, it must be somewhere in a hidden place." Another man in black said disapprovingly: "Don't be afraid, we have detectives before, this stone city only has a city gate that we just entered, as long as some of us wait for the rabbit here, they must be unable to fly, and they will be captured, by the way, you hurry up and find the mechanism." “

We also walked deep along the black and dark tomb road, the dusty air is so full of dull and rotten smell, people feel very pungent and uncomfortable, walked for a long time, and finally came to the end, fortunately it leads to the outside, we went out to see that this place is located in the south of Stone City, but we went out dumbfounded, walked for a long time, it was all high and towering city walls, and we couldn't fly up for a while, we didn't learn the mystical light skills of the previous martial arts, but the genuine, real light skills, too high, so we couldn't fly up at all, what to do？

Xiao Fei suddenly whispered to me: "I read an archaeological article in modern society, on the plan of the stone city drawn by the explorer Stein in 1900, it can be clearly seen that there is only one north gate in the inner city, and in the photos left by Stein and other explorers of the same era, it can also be clearly found that there is no south gate.

However, when they excavated the south gate of the inner city of Stone Town, they found that, contrary to the well-preserved and well-structured north gate, the existing so-called south gate was only a collapsed opening. In fact, Stein not only sent people to survey and map Stone Town, but he himself also came to the city, but he did not notice the existence of this protruding gate.

The section of the wall of the gate here is relatively regular, some of it is made of adobe neatly, the traces of the gate post are still very clear, and the corresponding part of the city has a structure similar to that of the urn city, obviously, this should indeed be a city gate. However, their investigation and investigation found that the south gate did exist, but unlike the ordinary city gate, it was a secret gate, which was completely invisible from the outside of the city wall, and the official name in ancient times was the Tumen. Because it can be seen from the existing doorway wall and the remaining doorposts at the south gate of the inner city, the thickness of the reserved part of the outer wall of the door is also relatively thin, which can be dug through and form a doorway for people to pass through in a short time. And Tu here means sudden, sudden, and the Tumen is a secret exit outside the official city gate, so that the defenders can surprise from the Tumen or sneak attack the enemy in wartime. The protruding gate was first seen in the record of the city defense facilities in the Warring States Period in "Mozi Beitu": the city is a hundred steps and a protruding gate. Du You of the Tang Dynasty has a specific description in the "General Dictionary": digging the city into the gate, how many things are coming, so that five or six inches should not be worn. Or in the middle of the night, when the enemy first came, the camp was undecided, and the elite cavalry jumped out of the gate, attacked its unpreparedness, and attacked it by surprise. ”

I couldn't wait to say: "Now is not the time for you Xiaofei to quote scriptures and show your talents, don't you see, everyone is as anxious as ants on a hot pot, now time is pressing, every second counts, you better don't talk nonsense, hurry up and get down to business." ”

Xiao Fei said: "That is to say, in addition to the suddenness of the attack, the defense function of the breakthrough door is also very strong. It can be seen from the existing part of the inner city gate, the exit of the gate is still a certain height from the ground outside the city, after the gate is penetrated, it is easy to go out, but it is more difficult to climb into the city, and after entering, there are still steep slopes and walls around, just like entering an urn city, it is easy to be attacked. At the same time, the concealment of the protruding gate here is also very strong, except for the city outside the city can not see any signs at all, the inner part of the city is also surrounded by walls, it is difficult to be found. Let's take a look. "I said, why don't you hurry up and tell everyone, everyone hurry up and find it.

Xiao Fei hurriedly explained the situation to everyone, so we were full of interest, and we looked for it in a hurry, but I didn't expect to find a sudden door in the close proximity, it was indeed a very hidden door, and those ancient and tall walls were integrated, I really didn't know that the situation could not be found at all, and then we quietly escaped from the stone city without effort, and then the eldest patriarch spit out a breath of air, it was really too frightening, and finally turned the corner at the last moment, I gave Xiao Fei a grateful glance, Xiao Fei said triumphantly: "If you see it, it's good to read more useless books, if you're not careful, you can save your life, don't always read some boring textbooks every day, you should read what you're interested in whether it's useful or not." “

We found that those shadowy, stupid and stupid men in black were still waiting for rabbits in Stone Town for unknown reasons, and we couldn't help but smile and run forward silently.