It is said that Wang Xuewu took Liu Renyu and other Jingbian Fort soldiers and horses around the bends, and walked to an abandoned cottage, which has some characteristics of northern Shaanxi, and all the houses are built in the mountains, which is for the cave.

"Learn martial arts, where is the entrance to the tunnel?" Liu Renyu entered this cottage, first looked around, and then asked Wang Xuewudao beside him.

"General, please come with your humble position." After Wang Xuewu finished speaking, he led the way in front.

Liu Renyu led a group of his subordinates to follow Wang Xuewu, climbed a high slope, and came to a platform, where three caves were lined up side by side, and the doors and windows of the three caves were rotten and dilapidated.

"General, this cave in the middle is the entrance." Wang Xuewu pointed to the one in the middle of the three caves and said.

"You go in first and lead the way." Liu Renyu faced Wang Xuewudao.

"Yes, General." When Wang Xuewu received the order, he turned over and dismounted, and then led his horse into the cave.

"Let's go, let's all go in." Liu Renyu beckoned to his men, then turned over and dismounted, led his mount, and entered the cave.

Yang Desheng and other officers and soldiers all turned over and dismounted, led their horses to form a long snake formation, and entered the cave in turn.

Liu Renyu entered the cave, found that the inside of the cave seems to be a cylinder cut off in half, the area is relatively large, about 30 square meters, the floor of this house is all solid hard soil, he looked around in the cave, and found that there is no other furniture in this house except for a clay kang.

As he continued to walk in, he saw a frameless door, and when he entered, the space suddenly narrowed, and in front of him was a passage about 3 meters high and 2 meters wide, but this passage was a slope that was not very steep.

He saw that this space was a little cramped, so he walked in front, led his horse behind him, and walked along the slope, he walked for a while, only to find that the slope was built into a spiral, he went all the way down, walked and walked, and found that the light was getting darker and darker, fortunately, Wang Xuewu lit the torch in time to illuminate the passage for Liu Renyu.

He walked on, and after a while, he found that at the end of the passage there was a large basement.

Liu Renyu looked around and found that the basement was 100 square meters in size, but the height was still only 3 meters high.

"Learn martial arts, wait here for a while, and wait until the others come before leaving." Liu Renyu faced Wang Xuewudao.

"Yes, General." Wang Xuewu agreed, and then stood quietly in the distance, quietly waiting for the other robes.

After a short time, Yang Desheng and others came here separately.

"Hey, I didn't think that our firecrackers would dig such a big place underground, amazing, amazing." Zhang Tieniu came to this underground space, first looked around for a while, and then really sighed for a while.

"Jiye has been digging with the firecrackers for more than a year, and with this achievement, it should be." Liu Renyu first replied to Zhang Tieniu, and then asked Wang Xuewu: "Xuewu, there are three entrances here, which is the real entrance?" ”

"Back to the general, this one in the middle is." Wang Xuewu replied.

"Lead the way." Liu Renyu commanded.

"Yes, General." Wang Xuewu agreed, and then led the horse and walked into the middle passage.

"Say hello to the officers and soldiers behind you, and they all go from the middle." The officers and soldiers under Liu Renyu gave an explanation, and then followed Wang Xuewu and entered the tunnel.

At this time, the tunnel narrowed again, and it was only 3 meters high and 2 meters wide.

Liu Renyu followed behind Wang Xuewu, and while walking, he asked the latter: "Xuewu, what is the arrangement of the passages on the other two sides?" ”

"General, there are traps in the other two roads, and if the enemy takes the wrong passage, they will naturally be killed by the traps." Wang Xuewu replied.

"That's very good." Liu Renyu nodded.

Then Liu Renyu didn't say anything anymore, he followed Wang Xuewu for about two miles, and then came to a basement that was 100 square meters large and 3 meters high.

However, this basement is different from the previous one, and there are as many as 20 passageways here.

"Why are there so many entrances here?" Liu Renyu wondered.

"Back to the general, there are still only 3 entrances to the city, and the rest of the entrances are passages dug for the people. When the tunnel was first excavated, according to your requirements, every citizen must have a tunnel that can escape, but we only dug one passage into the city, so the people can only enter the forked tunnel from their entrance, and then come here to meet, and finally enter the city. There is only one passage into the city, which is convenient for us to defend and monitor. ”

"Well, I see. Let me ask you, a few days ago, when Shen Yiyuan's group of rebels and the Mongols killed together, could the people of my Jingbian Fort escape through the tunnel? ”

"Naturally, there is." Wang Xuewu nodded.

"That's very good." Liu Renyu nodded first, and then looked back to see that Yang Desheng and the others had already caught up.

"My good man, there are so many openings here, which one is the entrance to the city?" Zhang Tieniu was dumbfounded when he saw that there were so many entrances in this basement.

"Learn martial arts, tell us, how to recognize the entrance?" Liu Renyu commanded.

"A few officials, please look at those three doors." Wang Xuewu pointed to the three side-by-side entrances to the left of the basement.

Liu Renyu and several other generals followed Wang Xuewu's instructions and looked at the three side-by-side entrances on the left.

"The one on the left of those entrances is the entrance to the city?" Wang Xuewu introduced.

"Desheng, there are too many entrances here, and some soldiers have not arrived, if you take the wrong road, I am afraid that there will be danger, you will stay here with a few people, and tell the follow-up soldiers which is the entrance to the city?" Liu Renyu commanded Yang Desheng.

"Yes, General." When Yang Desheng received the order, he took a few of his subordinates, holding torches, and stood at the entrance, ready to be a traffic warden.

"Learn martial arts, let's go on." Liu Renyu commanded Wang Xuewu.

"Yes, General." Wang Xuewu received the order, so he led the way in front and led Liu Renyu and other officers and soldiers to continue to advance.

"Xuewu, let me ask you, if you walk through this tunnel, you can go straight to the city, right?" Liu Renyu asked Wang Xuewudao.

"Exactly." Wang Xuewu nodded.

"This tunnel leads directly to the city, is it heavily defended according to my requirements?"

"General, let's invite the craftsmen and technicians of the industrial manufacturing institute to come to the tunnel and build two broken dragon stones, if there are enemy troops who catch the people of our Jingbian Fort and force them to lead the way, or if there are traitors in our fort and are detected by the soldiers guarding the tunnel, we can put down the broken dragon stones, block the passage, or simply blow up the passage."

"Well, very thoughtful. Where are the soldiers guarding the tunnels? ”

"Right ahead."

Wang Xuewu's voice fell, and he suddenly heard an extremely surprised voice from the other end of the tunnel: "General, it's the general who is back!" ”

Liu Renyu looked around, and suddenly found that there was a large basement in front of him, and there were 12 soldiers standing in it, and they were kneeling on the ground at this time, and saluted Liu Renyu: "The little one has seen the general." ”

Liu Renyu saw that there was another basement in front of him, so he took three steps and made two steps and walked in. When he entered the basement, he found that the basement was only 15 square meters in size, which was not very large, but it was enough for 12 people.

"Hurry up, hurry up." Liu Renyu looked at the basement and motioned for the soldiers to get up first.

"Thank you, General." The soldiers guarding the tunnel agreed, first got up separately, and then said in a gossipy voice: "General, our Jingbian Fort is besieged by thieves, you came back just in time, take us to fight those thieves." ”

"Yes, General, you can take us to fight the thieves."

"We'll talk about that later." Liu Renyu first waved his hand, signaling the soldiers not to talk about this topic again, and then continued to ask: "Are you soldiers guarding the tunnel?" ”

"Back to the general, the villain and the others are the soldiers guarding the tunnel." A leading soldier bowed in reply.

"Who are you soldiers?" Liu Renyu asked.

"It's a soldier under General Li Qian." The soldiers replied.