163: Preparations for the Third Wave of Invasion

South of the Sanmin Base, along the Coastline, a narrow and long coastal defense levee had begun to take shape in less than two days, thanks to the tireless efforts of thousands of base personnel working day and night.

This levee was cleverly divided into three sections: East, West, and South.

The coastal areas to the East and West, with their rugged terrain, towering cliffs, and vast reefs, formed a natural barrier that was easy to defend and difficult to attack.

Therefore, after constructing a low wall about ten feet high, the base did not invest excessive effort or resources in these two areas.

However, the situation to the South was entirely different.

From the perspective of the southern watchtower, despite a height difference of over ten meters, this area was a sandy beach with a relatively gentle slope.

If left unobstructed, attackers emerging from the sea could quickly reach the base of the southern watchtower in just a few minutes.

Even worse, once they bypassed the watchtower and headed directly for the Sanmin Base's main base, it would be a matter of moments.

This represented a potential risk point.

Therefore, in this construction, the southern city wall was of paramount importance.

Not only was the main wall much higher than those on the East and West sides, but the density of various defensive equipment, such as large ballistas, rapid-fire mortars, and light and heavy machine guns, was also much greater.

As for the large-caliber PLZ Vehicle-Mounted Howitzer, it was not deployed on this city wall.

Given the range of the PLZ Vehicle-Mounted Howitzer, even if it was within the Sanmin Base, its firepower could perfectly cover this area.

Furthermore, since this was the first line of defense and there was a possibility of it being breached, it was safer to deploy the PLZ Vehicle-Mounted Howitzer further back.

Some Iron Curtain Machine Cannons were also deployed, as these were detachable and easy to carry during an emergency retreat.

Most importantly, their armor-piercing capability was formidable.

In critical moments, they could be used to counter high-armor assault targets of the enemy.

They were extremely effective!

In addition to the construction of the city wall, the most labor-intensive task was digging trenches.

Along the over five hundred meters from the Coast to the main city wall, workers not only dug several trenches three meters deep but also meticulously placed a large number of concrete chevaux de frise, spike traps, and small anti-personnel mines between the trenches.

Since these trenches were dug from the outside in and were generally dug once and then no longer used, no passages were reserved.

It was not until about fifty meters from the city wall that the trenches, chevaux de frise, and other defensive facilities gradually decreased, replaced by small bunkers.

These bunkers were not large, each capable of accommodating a maximum of three to five people.

All the firing ports of the bunkers faced directly forward, and there were no doors.

At the bottom of the bunker floor, a ramp that could only accommodate one person crawling connected to the inside of the city wall.

This ramp was controlled by personnel inside the city wall, ensuring the safety of the passage entrance, so there was no need to worry about enemies entering the city through the bunker.

Once a large number of enemies launched a frontal assault, these bunkers could play a huge role, inflicting very effective casualties on the enemy.

Bang—

In the dead of night, a sudden explosion, like a clap of thunder from a clear sky, shattered the stillness of the night.

Immediately after, the beam of a large searchlight, like a flash of lightning, quickly shot towards the direction from which the sound had just come.

Illuminated by the light, the reconnaissance soldiers were surprised to discover that, at some unknown point, countless gray crabs had crawled out of the sea, densely packed together.

These gray crabs seemed to emerge from the deep sea like a gray tide, their sheer numbers astonishing.

And that thrilling explosion just now was caused by one of these gray crabs accidentally triggering the outermost landmine.

These gray crabs were unusually large, each the size of a football, with two massive pincers occupying a third of their body, glinting coldly in the moonlight, looking extremely intimidating.

As they rapidly climbed onto the Coast, more and more explosions were heard.

Because there were not many landmines deployed on the outermost perimeter, serving only as basic warning, the outside quickly became quiet once all the warning landmines were triggered.

Then came the increasingly clear rustling sound of the crabs crawling over the sand.