At the signal of Luo Hao and Yi Luo, Zhou Li and the ghost shark once again used the method just now to open the iron door that closed the sewage area.

With the sound of two iron doors rubbing against the rails, the iron doors in the sewage collection area of the water plant were opened.

The Longyin unit and the special combat personnel of the "A Group" rushed into the sewage collection area and established a defensive line.

Unlike the open-air seawater inlet area that we have passed through before, the sewage collection area is a closed area, the area is more than double that of the seawater inlet area, and the interval between the front and back is about 100 meters, and the structure is similar to the seawater inlet area, and a steel bridge is built above the sewage collection tank for passage; However, the shape of the steel bridge is no longer the simple "Feng" shape in the seawater inlet area, and the steel bridge on the sewage collection tank is more like two "Shen" characters connected side by side.

On the roof, two exhaust fans open and close at a fixed frequency, and dozens of fluorescent tubes illuminate the entire sewerage area.

The sewage in the sewage collection tank is so dark that you can't see the bottom of the water, and the shape of the fluorescent tubes on the roof is clearly reflected on the surface of the water.

If it weren't for the gas mask on his face, Luo Hao estimated that the smell of the sewage collection tank alone would have made people faint.

"There's something weird here, so be vigilant and be careful." Luo Hao reminded all the special forces members who entered the sewage collection area through the headset.

Yun Xi held the MP5K-PDW submachine gun in his hand, approached Luo Hao and asked, "What did you find?" ”

"Not yet."

Luo Hao shook his head and replied, "But my intuition makes me feel that something is not simple here. ”

"I trust your instincts!" Yunxi has unconditional trust in Luo Hao.

Luo Hao and Yi Luo respectively led the Longyin troops and the "A team" through the main road that extended to the ground through the steel bridge above the sewage collection tank, climbed the steel bridge and cautiously marched forward.

The more he walked along the steel bridge, the more obvious the uneasiness in Luo Hao's heart became.

Goo!

Suddenly, under the steel bridge, the sewage in the sewage collection tank emits a slight bubble rising from the water to the surface of the water and exploding.

This made De Luohao's whole person nervous instantly, and immediately stopped, pointed the muzzle of the gun at the sewage collection pond under the steel bridge, and his eyes were full of vigilance; However, the water surface of the sewage collection tank under his feet was not abnormal except for some shaking.

"What's wrong?" Xu Xudong asked Luo Hao.

"There's movement in the pool." Luo Hao still stared at the sewage collection tank with vigilant eyes and replied.

Xu Xudong looked around at the sewage collection tank and said in disbelief: "This is the sewage collected from the entire Honia Island, could there be anyone hiding under here?" ”

"There's movement." Yun Xi's eyes were fixed on the holographic diffraction scope on the MP5K-PDW, and he said, "Because I also heard it, 'grunt', it seems to be the sound of bubbles gushing out from under the surface of the water." ”

It may be possible that Luo Hao heard it wrong, but if Luo Hao and Yunxi heard it wrong at the same time, it is basically impossible!

However, if there are bubbles coming up from under the water, it is not necessarily that there are people hiding in the sewage collection tank. This is all domestic sewage collected on the island of Honia, waiting to be decontaminated, filtered, disinfected and then recycled, and it is possible to produce biogas here.

Therefore, the sound of bubbles gushing up from under the water surface that Luo Hao and Yunxi heard just now must be the biogas generated in the sewage collection tank.

Although this is a possibility that can explain the appearance of bubbles in the sewage collection tank, the members of the Longyin army standing on the steel bridge still dare not take it lightly and are careless. Because it is also possible that there is indeed a person hiding in this foul-smelling sewage collection tank, and the bubble that just turned up from the water was formed by the other party using a portable oxygen inhalation device to exhale carbon dioxide.

One minute...... Two minutes...... Three minutes!

The Long Yin troops stood on the steel bridge for three minutes, and they didn't notice anything unusual. Is it really that I am too nervous? Luo Hao couldn't help but doubt himself.

And just when Luo Hao was about to continue to move forward with the members of the Long Yin Army, a sudden change occurred, and the water surface of the originally calm sewage collection tank suddenly moved violently, and a large number of bubbles appeared at the same time in about a dozen places.

This sewage collection tank is really hidden under the cat!

In less than two seconds of bubbles coming out of the sewage collection tank, more than a dozen figures wearing black diving suits, diving goggles, and biting oxygen cylinder snorkels in their mouths came up from under the sewage pool, and raised their HK416 automatic rifles in their hands at the Longyin troops and the "A Group" on the steel bridge!

Dada!

Luo Hao, who had long been on guard against the abnormality of the sewage collection tank, shot first. A two-shot burst shot directly to the headhead of a water ghost on his right hand.

The splattered plasma fell into the sewage and quickly disappeared.

The dozen or so water ghosts wearing wetsuits and carrying oxygen cylinders were apparently hiding in the stinking sewage collection tank when they entered the water plant.

However, because the carbon dioxide produced by breathing in the water is exposed to the surface of the water by using oxygen cylinders, these water spirits choose to inhale a mouthful of oxygen and hide in the sewage with bated breath.

Can a person hold their breath underwater for three minutes after inhaling a mouthful of oxygen? For ordinary people, it is difficult to do; However, for professionally trained water ghosts, it is completely possible.

Navy SEALs have a diving training that requires them to jump into a pool without using any oxygen device, find the keys in the pool, and unlock the bindings on their hands and feet.

Back then, when Luo Hao was in the SERE training camp, he hid in the muddy pool for five minutes in one breath, which really scared Qi Fan, Chen Yingtian and others.

Dada! Dada!

Da-da-da-da! Da-da-da-da!

The reaction speed of those water ghosts in the sewage collection tank was not slow, and when Luo Hao was shooting, they also attacked.

Because they suddenly came out of the sewage collection tank, they completely caught the Longyin troops and the "A Group" on the steel bridge by surprise, and there was no shelter on the fence of the steel bridge, and there was no particularly good cover effect.

Therefore, they had to use tactical evasion actions to avoid and suppress the water ghosts in the sewage collection tank while evading.

Da Da Da ......

Da Da Da ......

The light machine guns in the hands of Situ Kong and Zhou Li also fired at the same time, and two strings of bullets swept by, killing the two water ghosts that emerged from the sewage collection tank.

These water spirits are very cunning, and when they are suppressed by fire, they sink back into the sewage collection tank and hide.