Right at this moment, the three Abyssal Spirit Dragon Kings suddenly did something very strange.

A crimson symbol appeared on each of their heads; these symbols resembled crimson moons, and right after they appeared, several dozens of abyssal creatures immediately flew over to the three Abyssal Spirit Dragon Kings from not far away.

As soon as they were close to the Abyssal Spirit Dragon Kings, they would suddenly explode into clouds of dense mist that was devoured by the Abyssal Spirit Dragon Kings.

In the next instant, bright blue light radiated from the eyes of the Abyssal Spirit Dragon Kings, and the spiritual power barrier up above was abruptly enhanced.

As a result, the nine fireballs were instantly diverted away into the surrounding area.

"Holy crap! They can do that?" Ao Rui almost swore out loud upon seeing this. The spiritual power of the three Abyssal Spirit Dragon Kings really was being expended very quickly. 

Not only did they have to oversee the entire battlefield, they also had to deal with the Battle Gods' attacks, but they could replenish their own spiritual power by devouring other abyssal creatures, and that was something that no one had anticipated.

Furthermore, the approaching abyssal creatures were clearly aware that they were going to die, but they were still plunging toward the Abyssal Spirit Dragon Kings like moths to a flame. With so many abyssal creatures on this mountaintop, didn't this mean their spiritual power was virtually limitless?

Ao Rui quickly composed himself, then decided, "Looks like melee combat is our only option. Let's go!"

After that, scintillating light erupted out of his back, propelling his body to plummet toward the mountaintop like a shooting star.

The Battle Gods followed along closely behind him, also charging toward the mountain summit.

At this point, a full-scale clash had already ensued between the abyssal army and the human troops on the second defensive line.

The Invulnerability Mist was simply far too troublesome to deal with; it was able to disrupt all surveillance and enhance the offensive and defensive capabilities of all abyssal creatures.

In particular, the enhancement to their defensive prowess was so significant that around three times the amount of energy was required to kill each abyssal creature with soul weapons. This allowed the abyssal creatures to survive longer and for more of them to reach closer to the defensive line.

They were advancing without any regard for their own lives, and they were simply far too fast; only a short while later, they had already scaled halfway up the mountain.

On the main battlefield, artillery fire was still falling like rain, and the human army was doing everything in its power to oppose the enemy. However, all of the most powerful defensive soul tools had been concentrated in the first defensive line, and the loss of that defensive line placed the human army at a significant disadvantage.

If it weren't for Gu Yuena and the powerful beings of the Spirit Pagoda holding back the abyssal emperors and sovereigns on the battlefield, of which there were over 20, the situation would be even more dire.

The Abyssal Spirit Dragons had far too great an effect on the battlefield, more so than anyone could’ve imagined. Their Invulnerability Mist and overall leadership skills made the abyssal army an organized unit, and it was impossible to estimate the number of abyssal creatures in the abyssal army as all the abyssal creatures that died would be replaced by more abyssal creatures rushing out of the passageway.

At this moment, the human army was getting first-hand experience of what their forefathers had faced 6,000 years ago.

Under the leadership of the Spirit Sovereign, the human army's most powerful attacks were unable to land inside the abyssal passageway, thereby rendering them unable to stem the flow of abyssal creatures.

Gu Yuena's Silver Dragon Spear was constantly devouring the abyssal energy in the air, but the Spirit Sovereign was an extremely formidable foe that possessed even superior spiritual power to her, so she had to focus wholeheartedly on their battle, thereby preventing her from being able to devour more abyssal energy.

It seemed that an impasse was beginning to ensue, and more and more troops from both sides were beginning to enter the fray. All of the Western Legion, Northwestern Legion, Central Legion, and Southern Legion's forces had already appeared on the battlefield, but without the long-range artillery support from the three naval fleets, they were still struggling to hold their own against the abyssal army.

Right at this moment, a group of black figures suddenly barged their way onto the battlefield from the side.

They immediately appeared on a mountaintop that was on the brink of being overrun, and this mountain was situated on the other side of the one that the three Abyssal Spirit Dragon Kings had already claimed.

This mountain was only roughly 500 meters tall, making it the shortest one in the surrounding defensive line, and it had become a target for the enemy.

The defense system on the mountaintop was already being attacked by abyssal creatures from close range, and they were only hanging on by the skin of their teeth thanks to the protective barrier.

All of the soul cannons were already overheating from prolonged continuous use, and it was clear that they wouldn't be able to last much longer.

Right at this moment, a streak of blue light suddenly descended from the heavens, and the air temperature plummeted drastically.

Immediately thereafter, thousands of ice swords appeared in mid-air without any warning, then rained down from the sky, striking one abyssal creature after another with unerring accuracy.

Several hundred of the abyssal creatures that were leading from the front and vigorously attacking the protective barrier were instantly nailed to the mountain by the ice swords.

All of a sudden, a series of red spots appeared all over the mountain's surface directly beneath the abyssal creatures. In the next instant, one small mushroom cloud after another exploded all over the mountain, and violent booms rang out across every section of the mountain.

A huge number of abyssal creatures were completely blown apart by the explosions, and even the Invulnerability Mist hadn't been able to save them.

"Reinforcements have arrived!"

Tears instantly began to flow down the face of a colonel situated on the mountaintop. Due to excessive continuous usage, over two-thirds of the soul cannons on the mountain had already malfunctioned. He had already issued an order to detonate all of the missiles and soul energy batteries on the mountain in the instant the protective barrier was broken, hoping to take down more enemies through self-detonation.

At this point, the protective barrier only had 18% remaining energy, and it would've only been able to last less than 20 more minutes at most.

Thus, the black mechas descending from the heavens were like saviors sent by the gods in his eyes.

However, to his surprise, he hadn't seen any of these black mechas before.

All of these mechas were black to correspond with the black 10,000-year-old soul rings of human Soul Masters, but each legion had its own emblem imprinted upon their mechas.

However, these black mechas bore no such emblems; there was only an antiquated red "Tang" character emblazoned onto their chests.

The colonel murmured to himself, "Those mechas are from the Tang Sect! It looks like there are at least 1,000 of them, and they're all black mechas!"

Indeed, these were all black mechas, but what was more fearsome was these mechas' modes of attack.

The prior attacks had just been unleashed by the eyes of these black mechas. Their eyes had all turned a terrifying red color, following which a series of red spots appeared all over the mountain, and immediately after that came the violent explosions.

The colonel had never seen soul lasers of this level of power, and he instantly realized that this had to be a new type of weapon.

He then saw one figure after another descending out of the sky, heading directly toward the abyssal creatures at the foot of the mountain.

There was an Abyssal Spirit Dragon among the abyssal creatures on this side, and its pupils immediately contracted upon hearing the resounding explosions. A large plume of red mist instantly emerged from the top of its head, and all of the abyssal creatures within a radius of around 100 meters were instantly devoured by it.

It then raised its head and expelled close to 20 clouds of Invulnerability Mist in all directions, virtually completely obscuring all of the abyssal creatures around it.