Half a month later, the trench was finally completed. Behind the trenches were wooden bunkers, which were leaning against each other. The iron gates and brick walls behind those bunkers had long since been torn down and replaced by a concave platform more than three meters high. On each side of the platform there is a tower that can accommodate several people, so that soldiers can be on duty in peacetime, and in wartime this tower can be used as a defensive bulwark. A two-meter-wide door was opened in the center of the platform to allow vehicles in the base camp to enter and exit.

A Type 81 squad light machine gun was placed on each of the towers, and from above, two 12.7 mm high flattening machines were placed directly below the tower under the tarpaulin. The frontal firepower construction has been basically completed, and once a battle breaks out, the base camp will soon be able to suppress the opponent with absolute firepower in a short time. As long as you buy 5 minutes for the soldiers, they can quickly come to reinforcements from the dugout with all kinds of weapons!

In the rectangular wooden bunker, Cheng Sen raised his hand and pushed the roof covered by the logs above his head. "Don't worry, it's all fixed with steel bars here, it's very strong, and ordinary weapons don't hurt the bunker much. Of course, if the enemy has heavy artillery, that's a different story. You see, the top of the bunker is actually about the same level as the ground. Here our soldiers can shoot through the firing ports reserved for this row, and it is almost impossible for the people outside to get bullets into the bunker. Jiang Chibing pointed to the shooting port in front of him about 20 centimeters high and explained to Cheng Sen a little proudly.

"Our first line of defence is the trench 20 metres ahead. Once they could not resist, the soldiers could retreat along the trenches to the rear and continue the battle in the bunkers on the left and right side of the rear. These two rows of bunkers are our second line of defense. Push open the door, and there is a troop trench outside. When the soldiers entered, they closed the door, and it became an excellent point of blocking fire. Jiang Chibing said and pushed the secret door in the bunker, revealing the trench outside and said to Cheng Sen.

"When the soldiers are fighting, the concave platform behind us can provide fire assistance. And when the soldiers retreated, the high platform could take on the responsibility of covering the soldiers. Underneath that, I also installed two 12.7mm flatteners. Each high flat machine is equipped with 4 ammunition boxes, each ammunition box can hold 600 rounds, and 2400 rounds of ammunition can be fired in an instant. Jiang Chibing got out of the bunker and pointed to the two high-level machines with 4 gun barrels that were placed on the left and right under the high platform and continued to Cheng Sen.

"And at the top of the two towers, I each had a light machine gun. In wartime, you can also increase the firepower from above as appropriate, and condescendingly hit the invading enemy. Brother Sen, the parking lot behind the high platform can be used as an artillery position for the 60 Artillery in wartime, covering a large area of enemy troops! That's it for the general distribution of firepower, and we will slowly improve or add to other details. What do you think? Jiang Chibing looked at the criss-crossing fortifications in front of him and asked Cheng Sen.

"Yes, Jiang, you and your brothers have worked hard during this time. The frontal fortifications can be put to an end for the time being, and there are still tasks for you to follow. Even if it is the defense of the back mountain, you also have to build it with your heart. We don't know from which direction the zombies will attack us. Maybe there will never be a zombie, or maybe there will be a zombie in a few days. In short, let's be prepared! Cheng Sen patted Jiang Chibing's shoulder apologetically and said to him.

In nearly 20 days, the frontal fortifications were basically completed, and Jiang Chibing and the soldiers could be said to have given up most of their rest time and rushed to complete the work day and night. Cheng Sen knew that the soldiers had worked hard, but now they couldn't be afraid of hard work, only by arranging the base camp like an iron wall, everyone's safety could be guaranteed.

"Don't worry, Brother Sen, I'm good at civil engineering, so leave it to me. But Brother Sen, it would be better if we could get some cement. In that case, I can take the fortifications to the next level. Jiang Chibing straightened his chest and took over the task. At the same time, he also told Cheng Sen what he thought.

"You take someone to do it first, and I'll solve the cement matter. By the way, let the brethren rest for a day, they are too tired! Cheng Sen looked at the soldiers who looked like mud monkeys around him, and said to him by holding Jiang Chibing's hand.

"Cheng~ I'll give them a day off today! Starting tomorrow, I will take people to the back mountain to survey the terrain. Jiang Chibing saluted Cheng Sen and nodded yes.

"Be safe, give the cigarettes to the brethren, and by the way, these two boxes of Red Bull! Although I don't know if it will be useful for restoring the strength of the brothers, I guess it's a thought! Cheng Sen waved his hand, motioned to the two guards who followed behind him to carry the energy drink over, and handed two more cigarettes to Jiang Chibing.

"This~" Jiang Chibing hesitated, he knew that these materials were not easy to come by. Rubbing his hands, he didn't dare to reach out to pick it up!

"Don't do this, that, hoarding supplies is weishenme? It's to make life better for the living. You've all worked hard, and these things are what you deserve. Rest assured, no one has an opinion. Cheng Sen shoehorned the two 95 Supremes in his hand into Jiang Chibing's hands and said.

"Fatty, during Jiang Chibing's expedition to the back mountain, the defense work here will be handed over to you!" Taking advantage of the stall where Jiang Chibing was distributing cigarettes and drinks to the soldiers, Cheng Sen beckoned to the fat tiger who was covered in muddy water.

"Don't worry, boss, when did my fat tiger fall off the chain?" The fat man reached out and took a pack of cigarettes thrown by Jiang Chibing, and neatly opened it and took a branch in his mouth.

"Good!" Cheng Sen thumped the fat tiger's chest and nodded.

"Lao Xu, Lao Xu? Come out, let's go out for a walk! Entering the air-raid shelter, Cheng Sen shook off the muddy water on his feet, and greeted Xu Silai loudly!

"I said, 'Do you have your heart's content?' Nima, every time Lao Tzu reaches a critical juncture, I hear you talking there! In the middle of the night, Xu Si ran over from his residence with his pants in his hand. While tying a belt, I complained there! Look at this jiashi, it is estimated that this goods are just spending money with their sisters again!

"Damn, in broad daylight, you're so addicted! Hurry up, find Lao Wu, let's go out! Banlayue didn't move, and the bones were rusty! Cheng Sen kicked Xu Si lightly and smiled at him!

"That's because you didn't move, Lao Tzu moved every day. I said, "Why are you going out today?" Xu Si gave Cheng Sen a middle finger and asked!

"Find some cement and take it with you!" After Cheng Sen finished speaking, Xu Si stretched out his hands and raised two middle fingers at him!

"Lao Tzu knows that it will not be good for you to find Lao Tzu. Lao Wu, Lao Wu, don't get tired of it in broad daylight. Come out, there's work to do! A moment later, Xu Si's shouting came from the air-raid shelter!