When they arrived at the courtyard house and the celestial bridal chamber, they discovered it was a

An hour later, the American attack force actually found a spot.

They exchanged excited glances and immediately sent someone down.

As it turned out, the Chinese People's Volunteer Army had already spotted them and sent a soldier to guard the opposite side.

The soldier's name is Li Yong. He grips his submachine gun tightly, his eyes revealing determination and vigilance.

As soon as the American soldier jumped down, he fired a burst of bullets. The "rat-a-tat-tat" of gunfire echoed in the tunnel, instantly killing the soldier.

The bodies of the American soldiers lay stiffly on the ground, blood slowly flowing out.

Seeing the danger, the American soldiers immediately threw grenades down. One American soldier pulled the pin on a grenade and threw it down forcefully. Li Yong retreated behind the door at the first opportunity.

With a loud "boom," the grenade exploded, sending dust flying, but it did not cause much damage.

The US then sent more soldiers down. Of course, they threw two grenades before coming down.

After two loud explosions, once the smoke had cleared slightly, an American soldier cautiously poked his head in.

It turned out that the tunnels dug by the Chinese People's Volunteer Army were very small, requiring people to bend over to pass through.

This is very inconvenient. He frowned and muttered, "What kind of place is this?"

This was also something Zhou Zheng'an had suggested to Chen Gengyang before, specifically to increase the difficulty of tunnel warfare for American soldiers.

Zhou Zheng'an looked at Chen Gengyang and said, "Commander, the American devils are tall. If we dig the tunnels smaller, we can make it harder for them to maneuver, which will allow us to deal with them more effectively."

Chen Gengyang smiled and nodded: "Good idea, I thought of that back in the Southern Monkey Kingdom."

Great minds think alike.

After three consecutive attacks that killed four people, the US stopped using grenades to attack the tunnels.

This time, a flamethrower was used instead.

A flamethrower is essentially a device that uses flammable gas and a flame-emitting mechanism. A single shot can sweep across a width of one or two meters and a distance of seven or eight meters.

This is actually a very cruel weapon and is banned by the United Nations.

But the Americans don't care about any of that; all they care about is victory.

Soon, they used flamethrowers to spray bullets at the tunnel entrance.

The orange-red flames, like a fierce fire dragon, rushed towards the tunnel entrance, carrying with them intense heat and an aura of destruction.

Before Li Yong, a volunteer soldier guarding the tunnel, could react, he was struck by a flamethrower and died instantly. His entire body was charred black and emitted a pungent odor.

Even the walls inside the tunnel were blackened by the fire.

The comrades who were waiting behind Li Yong were taken aback. Their eyes widened, and their faces were filled with fear and anger.

He immediately closed the door, turned and ran into the tunnel, shouting, "Staff Officer Zhou, something terrible has happened! The enemy is using fire! Comrade Li Yong has been killed!"

Zhou Zheng'an was deep in the tunnel pondering a solution when he heard the shout, and his expression instantly turned very serious.

He quickly walked over, examined Li Yong's body, and after a long silence, slowly said, "This should be a new weapon of the US military, possibly a firearm."

He then instructed everyone to immediately fill the tunnel with more soil to slow down the enemy's advance.

The three volunteer soldiers quickly sprang into action, picking up tools and beginning to fill the tunnel entrance with soil.

Not only to fill in the soil, but also to prepare for sniping should the enemy have dug up all the soil.

They whispered to each other as they filled the hole.

"We must hold this position and not let the enemy in."

"Yes, let's add more soil to make it harder for them."

Afterwards, Zhou Zheng'an went alone from the tunnel to another exit and walked out.

He crouched low, cautiously observing the movements of the surrounding enemies.

Once he was sure it was safe, he quickly took out grenades from his waist and threw seven or eight grenades in one go.

The grenades traced long arcs in the air before exploding with a series of loud bangs, sending flames soaring into the sky and dust billowing everywhere.

This explosion not only killed more than a dozen people, but also attracted a lot of American soldiers. They were startled by the sudden explosion and rushed towards the direction of the blast.

The American soldiers shouted as they ran.

"What happened? Where did the explosion occur?"

"Go quickly and check, don't let the Volunteer Army escape."

Afterwards, the American soldiers arrived at the place where Zhou Zheng'an had just appeared and first bombarded the tunnel entrance with grenades. The explosions continued, and dust and rocks flew everywhere.

Then, they immediately used a flamethrower to spray the area, and the fierce flames shot towards the tunnel entrance again.

Zhou Zheng'an ordered the three soldiers again: "Keep filling the soil, ignore them, let's just waste time with them."

The three soldiers nodded firmly and continued to desperately fill the soil.

Their foreheads were covered in sweat, but no one stopped what they were doing.

Then Zhou Zheng'an went to the third tunnel exit and continued throwing grenades.

The bomb killed more than a dozen American soldiers and attracted a large number of American soldiers. Seeing that the Chinese People's Volunteer Army's tunnel exits were increasing, the Americans were also troubled and had to divide their forces.

Thomas stamped his feet in anger and roared, "These volunteers are too cunning! They have exits everywhere! How are we supposed to fight them?"

Thomas then discussed with the newly arrived company commander, Cruise, and they ultimately decided to increase the excavation efforts on the discovered tunnels.

They brought in more engineers and digging tools, and the engineers wielded shovels and picks, digging frantically.

However, despite a whole day of relentless sniping by the Chinese People's Volunteer Army, they still failed.

Although they had already advanced more than ten meters from the three tunnel entrances, the mud and rocks ahead seemed endless. This was incredibly frustrating.

In fact, they were only four or five meters away from the actual tunnel.

However, the US side is unaware of this.

Without a clear timeline or schedule, it's easy to get frustrated. Just like before Zhou Zheng'an's time travel, some girls treated the boys who pursued them this way, and when the boys stopped pursuing them, they felt wronged, saying things like, "Why didn't you pursue me anymore? Are you crazy?"

Just now, an American sapper wiped the sweat from his brow and said to his comrade next to him, "How come we can never finish digging this soil? It feels like we're digging a bottomless pit."

His companion shook his head helplessly: "Who knows? These volunteer soldiers are too formidable. Safety first, don't go and get yourself killed."

"right!"

……

Finally, night fell. The American side, with over 120 men, did not retreat; instead, they set up camp on the spot.

They pulled out searchlights and spotlights, and made use of the previously destroyed tanks to form a simple encirclement.

This was to prevent the Chinese People's Volunteer Army from launching a surprise attack in the middle of the night.

In the previous five campaigns, the Chinese People's Volunteer Army favored night raids in the initial stages, causing heavy losses to the United States.

They've also improved; they know how to stop the Volunteer Army's night raids.

Basically, using tanks and armored vehicles as the first line of defense, supplemented by other simple fortifications, and aided by searchlights, greatly increased the difficulty of night raids by the Chinese People's Volunteer Army.

Thomas and Cruise stood in the middle of the camp, looking at the defensive lines set up around them, but they still didn't feel very at ease.

The main problem is that soldiers like Zhou Zheng'an are beyond their comprehension.

Thomas pondered for a moment before saying, "Cruise, our defenses are so tight this time, do you think we can withstand a night raid by the Volunteer Army?"

"..." Cruise.