High-level martial arts: Contract cashback, invincible starting from the Zerg.

The city of Sierra is shrouded in a thick haze.

The sky, which was originally as blue as a jewel, was now pressed down very low by rolling black clouds, and a terrifying roar could be faintly heard from the churning of the clouds.

More than ten kilometers away from the Wall of Giants, a black tide was sweeping towards the city of Sera.

Those were hundreds of Qiongqi and Taotie, along with thousands of their giant beast servants.

Qiongqi is a terrifying behemoth with wings and the strength of a tiger. Every time it flaps its wings, it stirs up a gust of wind, and its blood-red eyes gleam with a bloodthirsty light.

Below the Qiongqi horde, an even greater number of Taotie behemoths strode with heavy steps, each one seemingly causing the earth to tremble.

Following closely behind the Taotie was a group of enormous, ferocious wolf-like beasts.

Faced with the well-prepared human defenses, these giant beasts opened their furious maws and let out deafening roars.

It seemed as if it wanted to devour the entire world into its belly.

At this moment, on the wall of giant beasts, in addition to thousands of combatants, there were nearly tens of thousands of military police. However, half of them were military police from inland cities who had never seen so many giant beasts before.

So most of them stared wide-eyed at the apocalyptic scene in the distance.

"Buzz—Buzz—Buzz—" The piercing city defense alarm suddenly rang out over the city of Sera. The sound was urgent and sharp, instantly breaking the tranquility of the city.

People who were busy on the streets stopped what they were doing when they heard the alarm, and their faces showed anxiety.

The children were so frightened that they cried loudly and clung tightly to their parents' legs;

The elderly people, with trembling hands, murmured prayers for divine protection.

Just then, after compiling the statistics, the smart terminal in Sierra City immediately sent a message to all the combatants' headsets.

[Battle Report: The vanguard of the behemoths mainly consists of Qiongqi and Taotie, with the enemy's numbers remaining stable at around 10,000 units.]

Chen Feng snorted coldly.

There are nearly several thousand warriors on the Wall of Giants alone; such a large-scale vanguard of giant beasts could not possibly break through the human defenses.

However, the firepower intensity used to test the human defenses was just right.

As Chen Feng and the other members of the Haixing City Guard raised their sniper rifles, they also aimed at their respective targets under the tactical lock-on of their headsets.

"Use a three-stage firing method: one group locks onto the Qiongqi target, aiming at the base of its wings; the second and third groups are on standby."

"Captain Chen, what about the Taotie on the ground?"

"Once the Taotie are locked onto by the machine gun, the headset will expose tactical markings on them, allowing us to assist the machine gun in firing at them," Chen Feng replied.

"clear!"

"clear."

"Group Three, pay attention to the movements of other behemoths or servants in the behemoth tide, and report to me immediately."

As the behemoth horde entered the firing range of the automatic fire matrix.

The automatic cannons were the first to unleash their power, quickly turning their muzzles to aim at the surging tide of behemoths. Deep within the cannon barrels, a crimson light gradually shone as they were continuously preheated.

With a deafening roar, thousands of machine guns on the human defense line opened fire instantly!

Shells rained down like a storm, exploding into dazzling flowers of death amidst the horde of giant beasts.

The gluttonous beasts had tried to shield other giant beasts from the gunfire with their massive bodies, but they only stayed for a moment before being locked onto as priority targets by the AI ​​terminal.

Instantly, more machine guns were mobilized to concentrate their fire, and the machine guns were blasted to pieces by the sheer number of shells.

After the Taotie behemoths were subjected to fierce artillery fire, the Qiongqi immediately launched a dive attack on the human defense line.

Their enormous and ferocious bodies, with wingspans reaching tens of meters, and the feathers on their wings like sharp steel blades, gleamed with a cold light under the gray sky.

The sharp roars of the Qiongqi beasts now sounded like thousands of sharp blades clashing together.

The sound was so powerful that the soldiers and police on the human defense line felt their eardrums ache and their hearts felt as if they were about to be shattered by the terrifying noise.

"All members, track my aiming signal!" Chen Feng immediately raised his sniper rifle and aimed at the group of Qiongqi that were diving towards other defensive zones.

Qu Lu and Liu Siyu frowned, but immediately raised their sniper rifles.

As Chen Feng's sniper rifle locked onto one of the targets, the other guards in Chen Feng's headset also locked onto the Qiongqi near the target.

"Fire!!"

The sniper rifles on the wall of behemoths kept flashing yellow and white flames.

The Qiongqi that rushed down from the clouds first also suffered a very heavy blow, and they all fell from the sky and crashed to the ground.

......

Humanity emerged victorious from this wave of pioneering behemoths.

However, inside the command post of the Wall of Giants, Lieutenant General Karl looked grimly at the annihilated horde of giant beasts before him, his gaze occasionally drifting toward the powerful being hidden behind the dark clouds.

"This wave of vanguard behemoths is significantly larger and of higher quality than before," Lieutenant General Karl said.

Yan Di glanced at the staff behind Karl and said directly, "According to the feedback from the AI, the casualty ratio in this defensive operation was 1:7.8, the ratio of our irrecoverable losses was 1:6.7, and the average repair time for the damaged combat power was also reduced to 3 hours... All parameters have verified the applicability of the current tactics."

Lieutenant General Carl smiled.

"This is only a small part of the behemoth tide; we haven't even seen many Earth-rank behemoths."

"Our strongest warriors haven't made a move either..." Emperor Yan added.

Lieutenant General Karl narrowed his eyes slightly, the smile on his face gradually fading, and his expression became solemn and serious, as if an invisible haze was quietly enveloping him.

He spoke slowly, his voice low and steady, each word seemingly squeezed out with difficulty from between his teeth: "What truly chills me to the bone is that powerful presence hidden thousands of miles above the sky."

His gaze seemed to be fixed on the unknown depths of the dark, gloomy clouds in the distance, his eyes revealing a deep sense of apprehension and powerlessness.

"Judging from the faint aura it occasionally emits, it is definitely not a force that we can currently resist."

"Moreover, the special envoy has already left by summer solstice... If it chooses to attack us at this time, I'm afraid our carefully constructed defenses will be easily crushed, just like a giant ship easily crushes a fragile paper boat."