It took more than three hours for Dong Ku to burn these cannons, but the Japanese army was powerless to stop them. Their reinforcements, helicopters alone could not pass through, moreover, in order to carry out the strangulation of the tunnel here air defense facilities, there are no anti-aircraft machine guns and anti-aircraft artillery, and they also know that although their own planes have a zero type, they cannot compete with the helicopters of the advance army, the skin is too thin, the opponent's firepower is still too fierce, and there are machine guns.

Therefore, after the ground could not carry out manual blasting of these tanks, the Japanese army chose to strangle them in the rear tunnel.

The destruction of the cannons was very smooth, after those cannons were incinerated, Dong Ku even blew them up, and those machine parts were deformed after high temperature calcination, and they could not be repaired by simply replacing the parts, unless they were returned to the factory. Even if the bore of the cannon is not in trouble, these cannons have become scrap metal.

However, the Japanese artillery was lost, but the tunnel was still there, except for the loss of contact between the front and the rear, the rest was nothing.

The cannons were burned, the helicopters quickly transported the soldiers to the top of the bunkers, the groups of soldiers were put down, the small gasoline generators roared, and the searchlights were set up. The fighters hid in the bunkers they had constructed, blocking off the open areas beneath all the Japanese bunkers in the front.

In the sky, helicopters were constantly circling, and they were on guard in the air irregularly, as if they were trying to trap the Japanese troops inside these bunkers, and they did not intend to attack.

The Japanese watched and found that they could not reach the advance team at the top of the opposite bunker, but once they got out of the tunnel, there would be no hiding place in the clearing, so they didn't even think about leaving.

They didn't care about this at all, the drinking water and food they prepared were not a problem even if they lived in the tunnel for three or two months, so they could afford it. Again. It really can't be done, digging, getting out of the ground, they believe it's not a difficult thing.

In the tunnel, except for those on duty, the Japanese soldiers were guarding their positions. Not flustered at all. The two idle scoundrels who cooked walked around and laughed with these Japanese soldiers from time to time.

They are the two tiger tooth warriors lurking in, Zhang Long and Li Ruide. As for the two cooks, they were already lying under a pile of rice bags.

Walking around, the two quickly locked on to the target, which was a command center, not far from the medical room. There, perhaps, there are the authentic drawings they want.

One of the two took cover, and the other quietly touched in, but after entering, it didn't even take a minute, and the people who went in quickly evacuated.

Seeing the vague gesture, the sentry understood that there was a phone here, but now it is useless. Thus, the role of the command is lost. Or just a phone room. There's nothing in there.

They had been in the tunnel for an hour, and they had even reached the place where the collapse had been, but they had not been able to find what they were looking for. Only the horn was found, and the large vents of the teacup were found, and there was one overhead every other section, and the air flow blowing out was fresh air. It's no longer cold, but it's clearly fresh, that is, straight through the vents outside.

They know that there is a sandwich wall in the road, and there is also one in it. And it has been figured out that the passages in the fighting chamber that do not go through the tunnel entrance from above are four-way, which is a trap.

I also know how the Japanese army's secret doors and shooting ports are hidden. The firing ports were all made of wood or slate, and the front was made of cement with the same marks as the wall, and it was indeed difficult to find without looking closely.

But what is the use of saying this? They did not dare to enter those battle positions, and there were many mechanisms, and they did not dare to probe if they found them, and if they were seen by the Japanese army, they would be suspected.

And it had nothing to do with the purpose of their entry, even if they drew a complete diagram of the tunnel, the ventilation system still couldn't be found. Without the ventilation system, Dong Ku's oxygen-free meter plan could not be implemented, but they saw that there was enough food and drinking water here, although it was only a part, but judging from the feeling of the Japanese army's food, they did not mean to save food, that is, although they lost contact with the rear and cut off supplies, the Japanese army did not lack drinking water and food.

They can't enter the mezzanine in the tunnel, they already know the road, the number of people who enter and the code determine that they can't enter smoothly, obviously, there is another set of survival reserves inside, and the battle space.

They devised a plan to use incense to mesmerize about a squadron of Japanese troops here, and they could take the tunnel. But this place is not connected to other tunnels, not to mention, and taking this place will not solve the problem of the ventilation system.

More than two hours later, the two of them reluctantly reported the situation to the command, but they sadly found that walkie-talkies could not be used here, and the two of them were useful to each other, but they could not contact the outside.

Finding that they had lost contact with the outside world, the two of them understood, and the original plan of using artillery bombardment, and then fighting out of the tunnel, quietly disappeared in the smoke, and the plan to bring the information back could not be implemented, so they had to do it themselves.

Zhang Long silently took out the antidote and wiped it under his nose, and Li Ruide also knew that except for ylang-ylang, it was impossible for them to enter the mezzanine in a short time. The trap here is a mezzanine, and there is also a mezzanine behind the wall here, and it is completely separated from this side, and it is impossible to know the structure of the tunnel without searching inside, and it is impossible to find the ventilation system.

The two of them packed up their hands and opened the ylang-ylang incense in their respective hands, Zhang Long walked to the location where he heard the mouth, and Li Ruide walked to the other end.

In the tunnel, the Japanese soldiers suddenly smelled a strong fragrance, subconsciously sniffed deeply, and stood up to find the source of the aroma, but before they could stand up straight, an irresistible sleepiness hit, and then staggered back, slowly closed their eyes, and then snored like thunder.

Zhang Long walked to the end, closed the bottle cap, and then began to twist his neck one by one, the clicking sound kept ringing, and the heads of those Japanese soldiers fell to the side softly, continuing their spring dreams.

Zhang Long finished twisting all the way, a total of 132 Japanese soldiers, tired and his hands were weak, and when Li Ruide came back, the two of them collected the entire tunnel, found the equipment of the comrades recovered by the Japanese army, quickly checked the weapons, and then changed their clothes.

The Japanese army may have obtained the corpses of the advance army for the first time, they came to get the shoes and clothes and packed them back, obviously to take them back for study, but unfortunately, they couldn't send them back, but let Zhang Long save them trouble.

Everything was cleaned up, for the sake of safety, Zhang Long searched carefully on the wall, and finally saw a square trace, then took out a dagger, cut open the baffle of the shooting port, put ylang-ylang in the mouth, and closed the plank.

He took out a bomb, selected a place, and planted a time bomb on the shore, and after more than ten seconds, with a bang, the wall was blown out of a hole half a meter square, and the camouflage of the stone slab blocking the outside was shattered.

The sound of the explosion alarmed the Japanese troops in the distance, and the footsteps in the mezzanine were pounding, apparently to reinforce this side, or to check the situation.

Zhang Long and Li Ruide didn't care at all, they got into the mezzanine in the dust, and quickly found the medicine bottle, and then put it away. Even if the bottle is empty, he won't leave it behind.

At this time, because of the airflow in the mezzanine, the aroma spread far away in a minute or two, and there was no Japanese soldier standing around the entrance of the cave, and all of them fell asleep to the ground.

"Move fast!"

Zhang Long quickly cleaned up the sleeping Japanese soldiers with bayonets in the dim light, took off all the grenades on their bodies, kept stuffing them into their bags, and searched inside.

Zhang Long's caution was indeed correct, they hadn't run a thousand meters before there was a sound of footsteps in front of them. There are still people who are not stunned.

The two of them were undaunted, covering each other and searching forward.

Sure enough, after turning a few corners, four Japanese soldiers suddenly appeared in front of them, holding guns, and cautiously touched this side.

Zhang Long looked at it, and instantly retracted, the Japanese army had already discovered him, and in the chaos, no one shouted, obviously preparing to attack.

Zhang Long did not hesitate, this kind of gun is very difficult, he didn't dare to guarantee whether there was a mezzanine next to it, so he retracted his head, took out a grenade, knocked it, counted the seconds for two seconds, and raised his hand to grunt.

"Grenade!"

"Get out of the !!"

In the gurgling sound, several Japanese soldiers panicked and shouted to dodge.

Zhang Long and Li Ruide sprinted a few steps back, turned the previous corner, and crouched against the wall.

Rumble!

There was a loud bang, the light bulb in the tunnel cracked, and a wave of heat roared over Zhang Long and them, scorching the hairs on their necks and faces.

The space here is small, and the power of the grenade explodes at close range, which is several times larger than that in the field, so Zhang Long collected so many grenades to clean up the Japanese troops left behind due to the lack of ylang-ylang.

In the buzzing of his ears, Zhang Long rushed to the location of the explosion behind him in the air wave, in the dark environment, turned the corner, and the flashlight tied to the AK was instantly measured, and then turned off, with the information seen in the fleeting light, he stepped forward and used the three-edged military stab on the AK to mend the knife to the four corpses, and then whispered: "Search the surroundings, forward!" ”

Li Ruide whispered, and the two of them searched cautiously forward in the dark environment.

An hour later, when Zhang Long threw out the twenty-sixth grenade, there were already large cracks in the tunnel, and his feet were also covered with dust and debris scattered all over the ground.

The pit is over.

Sure enough, this is the end of the tunnel, Zhang Long's grenade killed five Japanese soldiers and stunned four Japanese soldiers, who were digging to clear the collapsed tunnel and trying to communicate with the rear.

It's over......

Zhang Long was stunned, looking at the collapsed tunnel in front of him in the flashlight, and watching the Japanese army clear out the debris more than two meters away, he knew that the captain's plan could not be implemented. Because, the ventilation system here is independent, or a ventilation system and a lighting system for several bunkers, anyway, they don't have it here. (To be continued......)