Xia Mengqiu intended to call for help. With the Battleground Eye constantly monitoring the sky above the ancient battlefield, someone from the Beast Taming Corps should arrive to rescue them soon.
However, Zheng Dong was not flustered at all. He planned to try it himself, as he still had hundreds of undead under his control, and he and Xiao Zi were capable of fighting.
If he could defeat this Skeleton General, he wanted to try sealing it with the Necromancer Tower and transforming it into a puppet.
Thus, before Xia Mengqiu could even call for help, Zheng Dong, along with Xiao Zi, initiated the attack.
Zheng Dong conjured numerous clones. These clones used spatial movement to appear above the Skeleton General and the many skeleton soldiers, unleashing the ultimate skill, Absolute Darkness, to transform the surroundings into a dark domain.
Although the Skeleton General was a General-level undead, it had not learned any ultimate perception-type skills. Facing Absolute Darkness, it was helpless. Without perception, it could not command these skeleton soldiers.
Furthermore, the skeleton soldiers could not discern who the enemy was. After being attacked by the undead controlled by Zheng Dong, they fell into chaos and began fighting amongst themselves.
Before long, all these skeleton soldiers fell to the ground and were converted into new undead by Zheng Dong using the Undead Battlefield.
As a result, the number of undead controlled by Zheng Dong surged significantly.
However, he also discovered that once these converted undead died, they could not be converted again.
This meant that each undead could only be converted once, as this conversion consumed the residual energy of the undead's original body.
Once the energy was depleted, it could not be replenished, thus lacking the conditions for further conversion.
Concurrently, Xiao Zi also conjured numerous clones and used the combined skill, Ultimate Shadow Chains, to firmly bind the Skeleton General.
However, the Skeleton General possessed immense strength, and Xiao Zi and its clones could not suppress it for too long.
Fortunately, Zheng Dong quickly freed himself and activated the Necromancer Tower, preparing to seal and transform it.
The Necromancer Tower continuously grew larger, expanding to three stories high, releasing waves of black, water-like sealing power that further suppressed and sealed the Skeleton General before drawing it into the Necromancer Tower for transformation.
The transformation process was not very long but consumed a significant amount of Zheng Dong's mental power.
If Zheng Dong's mental power had not already reached the intermediate level, he would not have been able to activate the Necromancer Tower to transform the Skeleton General.
Soon, the transformation was successful, and Zheng Dong released the Skeleton General through the Necromancer Tower.
He discovered that after the transformation, the Skeleton General, although now a puppet completely controlled by the Necromancer Tower, had not weakened. It could also continue to cultivate and grow. As long as it did not die in battle, it could exist indefinitely.
Such undead puppets were simply perfect.
They were much stronger than the undead converted by the Undead Battlefield and possessed even greater potential.
However, the puppets transformed by the Necromancer Tower also had limitations. With Zheng Dong's current mental power, he could transform and control a maximum of nine undead puppets through the Necromancer Tower.
Of course, this was already quite good. Coupled with the undead controlled by the Undead Battlefield, Zheng Dong felt that he could venture into most areas of the ancient battlefield.
Xia Mengqiu, who was observing, had prepared to help when Zheng Dong made his move. She never expected that Zheng Dong would transform the General-level Skeleton General into an undead puppet in the blink of an eye.
Moreover, all those skeleton soldiers had also been killed and subsequently converted into undead.
This completely shattered her worldview.
When did Zheng Dong become so strong? He could even easily defeat a General-level Skeleton General!
In reality, there was also an element of luck involved.
The Skeleton General had only recently evolved into a General-level undead and did not possess many skills. It was unable to cope with the dark domain formed by Absolute Darkness. Losing its perception, it was easily suppressed by Xiao Zi's combined skill, Ultimate Shadow Chains.
Even so, it had almost broken free.
Now that he had the Skeleton General as an undead puppet, Zheng Dong intended to target more General-level undead.
Not long after, they encountered another General-level Night Wraith.
Night Wraiths had no substantial form; they could change at will, sometimes appearing as a wisp of black mist, other times as a gust of eerie wind. With the Shadow Concealment skill, they were even harder to detect and possessed strong self-preservation abilities, but their offensive capabilities were relatively weak.
Otherwise, Zheng Dong would have considered contracting a Night Wraith.
Immediately, Zheng Dong activated the Necromancer Tower and ordered the Skeleton General to attack the Night Wraith.
The Skeleton General had mastered the low-tier skills Bone Spike and Bone Spear, the intermediate-tier skills White Bone Armor and Ruin Spear, the high-tier skill Death Roar, and the ultimate skill Ruin Nine Slashes.
Upon receiving Zheng Dong's command, the Skeleton General did not hesitate. It used Death Roar while wielding the Ruin Spear and charged towards the Night Wraith.
Death Roar could indeed harm incorporeal undead like the Night Wraith.
As the Skeleton General roared, it unleashed invisible, eerie sound waves with Death Roar, continuously impacting the Night Wraith.
The black mist that formed the Night Wraith rolled violently, appearing enraged, or perhaps in pain. It soon condensed its form, mimicking the Skeleton General, and transformed into an even larger undead.
Unfortunately, it was only terrifying in appearance and did not scare the Skeleton General at all.
The Skeleton General, holding the Ruin Spear, thrust it forward, and within a few strikes, it knocked the Night Wraith to the ground.
The enraged Night Wraith then attacked with skills like Ghost Fire, Soul Grasp, and Chaotic Soul Vortex, but it was still no match for the Skeleton General.
However, it was not easy for the Skeleton General to defeat the Night Wraith.
Seeing that it couldn't win, the Night Wraith decided to use its Concealment skill and prepare to escape.
Unfortunately, its movements were still too slow. It was suppressed by the combined skill, Ultimate Shadow Chains, used by Xiao Zi and its clones.
The Skeleton General seized the opportunity and took advantage of the moment to kill the Night Wraith.
After the Night Wraith died, it left behind a Life Crystal, the Night Orb.
However, Zheng Dong did not intend to sell it. Instead, he activated his Talent Orb and used the Undead Battlefield to convert it into an undead.
The converted Night Wraith only possessed seventy percent of its original combat power, but it was still a General-level undead nonetheless.
Subsequently, Zheng Dong hunted over a dozen more General-level undead, as well as a large number of Lord-level and Commander-level undead. As a result, the number of undead under his control exceeded one hundred thousand, creating an imposing presence.
Along the way, many undead and beast tamers actively avoided them upon seeing them.
Of course, this had not yet reached the upper limit of undead that the Undead Battlefield could control, and it seemed to have no limit at all.
At this point, Zheng Dong and Xia Mengqiu also arrived at a region known as the Hell Rift.
The area was filled with bottomless rifts, spread out like a giant spiderweb across the ground.
Piercing, chilling winds constantly blew out from the rifts, accompanied by various eerie sounds, making one feel as if they were in hell.
Not far away, there were several mountains engulfed in scorching flames. They appeared ordinary, but these flames had never been extinguished.
Afterward, Zheng Dong and Xia Mengqiu searched the surroundings for undead they could contract.
The undead needed to have a growth level that was not too high but possessed immense growth potential, otherwise, it would be difficult to contract them, and the beast-taming space would not be able to withstand it.
With the help of the over one hundred thousand undead controlled by the Undead Battlefield, Zheng Dong quickly found many undead that could be contracted nearby, such as the transcendent-level Hellhound, Twin-headed Phantom Snake, and Infernal Gryphon.
Unfortunately, Zheng Dong was not particularly satisfied with these undead, and he did not have an urgent desire to contract them.
"Zheng Dong, have you not yet decided what kind of undead-type pet you want to contract?" Xia Mengqiu couldn't help but ask.
Zheng Dong nodded. He was very conflicted. In the past, he lacked the strength and thus had no choices. Now that he had options, he always wanted to contract the best.
This was a common problem everyone faced.
Xia Mengqiu understood.
So, she continued, "I think you should first consider what kind of pet team you want to build in the future. Generally speaking, you need to contract pets for land, water, and air.
Besides that, our Relic Bureau also contracts an undead-type pet with strong offensive capabilities. This is because most undead-type pets have possession skills. In certain dangerous relic spaces, possessing an undead-type pet can greatly increase our survival rate.
As for you, after contracting the Gold-Devouring Rat, you'll contract an undead-type pet, and perhaps later a mechanical-type pet.
After all, people in your Special Operations Bureau all contract mechanical-type pets to use forbidden weapons and quickly track opponents.
Therefore, I suggest that the undead-type pet you contract should at least be able to cooperate effectively with the mechanical pet you will contract in the future and your Gold-Devouring Rat, ensuring clear division of labor and specialized skills."
Xia Mengqiu's suggestion was very good.
However, it only made Zheng Dong consider more and made his choice even more difficult.
Since he could not make a decision for the time being, Zheng Dong sealed the contracted undead he had captured using the Necromancer Tower, then took out the Relic Orb and threw them all into the relic space.
Next, he continued to capture contractable undead.
Even if he didn't contract them in the end, he could sell them later.
Xia Mengqiu did not object. Since they were already here, capturing a few more was not a problem.
However, not long after, the Necromancer Tower in Zheng Dong's hand suddenly vibrated violently in one direction, as if something was attracting it.
Zheng Dong was startled and looked at Xia Mengqiu.
"Sister Mengqiu, why don't we go take a look?"
Xia Mengqiu was indifferent. If she had been worried about danger before, now that Zheng Dong controlled a large number of undead and could go to most areas of the ancient battlefield, she had no more reservations.
"I'll listen to you. Perhaps we can even find fragments of the Necromancer Tower when it broke!" Xia Mengqiu said with a smile.
The two moved towards the direction where the Necromancer Tower was vibrating, passing through the Hell Rift area and entering a desolate plain.
At this point, neither of them had noticed that the moon hanging in the sky had turned blood red.
The light emitted by the blood moon made the undead on the ancient battlefield even more active.
Along with the appearance of the blood moon, strange sounds continued to echo.
As a result, many powerful sleeping undead were gradually awakened.
This made the entire ancient battlefield increasingly dangerous.
And the one orchestrating all this from behind the scenes was Wei Peng, the person in charge of the Divine Capital Spirit God Cult.
Due to the severe crackdown by the Special Operations Bureau recently, the Spirit God Cult's branch in the Divine Capital had suffered heavy losses. Several of Wei Peng's capable subordinates, including his son, had been killed one after another.
Wei Peng decided to retaliate. He wanted to awaken the undead of the ancient battlefield and have them attack the Divine Capital, so that the Special Operations Bureau would know that he, Wei Peng, was not to be trifled with.
Such incidents had occurred many times before, each time causing rivers of blood and countless casualties in the Divine Capital.
This was also why the Beast Taming Corps was stationed in the ancient battlefield year-round.
As for the method of awakening, it was simple: using the beast-taming talent, Undead Awakening.
Wei Peng's original beast-taming talent was very ordinary. After joining the Spirit God Cult and gaining recognition, he obtained a second beast-taming talent, Undead Awakening.
This beast-taming talent was also acquired by plundering other beast tamers, but it had already been extracted from the Talent Orb and completely inherited into Wei Peng's body.
Thus, Wei Peng could use Undead Awakening, with the help of the full moon tonight, to awaken the powerful undead slumbering in the ancient battlefield.
Once these undead awakened, they would inevitably attack the Divine Capital.
To ensure the smooth execution of his plan, Wei Peng had prepared extensively, including mechanical life forms that could temporarily shield the Battleground Eye, as well as various rare resources to enhance Undead Awakening.
Therefore, the Battleground Eye in the sky had not yet detected any abnormalities, and the Beast Taming Corps had not taken any action.
With Wei Peng's operations, many powerful undead also appeared in the plain where Zheng Dong was located.
Zheng Dong and Xia Mengqiu had not yet noticed the danger; they had already arrived in an area with a cluster of giant rocks.
This area was known as the Stone Giant Temple.
Legend had it that in the mythical era, there was a massive temple here, but the temple had been completely destroyed, leaving only these giant stones.
Each of these giant stones weighed hundreds of tons, and despite years of wind and rain, they showed no signs of weathering.
However, when instruments detected these giant stones, they found them to be just ordinary rocks.
Upon arriving here, the Necromancer Tower stopped vibrating.
Zheng Dong felt that something attracting the Necromancer Tower should be nearby.
He asked Xiao Zi to search.
Xiao Zi's proficiency in the Treasure Hunting skill had already reached the peak level, so finding something was not difficult for it.
Soon, Xiao Zi stopped near a giant rock and informed Zheng Dong that there was an anomaly in the space here, suggesting the existence of a spatial rift or a relic space.
After Xiao Zi's second mutation and acquiring the spatial attribute, it was also sensitive to things hidden in spatial rifts.
Unfortunately, Xiao Zi did not possess many spatial skills and could not directly retrieve the hidden object.
Zheng Dong frowned and decided to call out the Gem Cat cub to try.
Although Zheng Dong could not communicate directly with the Gem Cat cub, Xiao Zi could communicate with it.
Under Xiao Zi's guidance, the Gem Cat cub used Spatial Vibration to continuously vibrate the surrounding space. Before long, a black, tower-like object fell out from the spatial interlayer.
Zheng Dong picked it up and examined it. It was not a fragment of the Necromancer Tower, but a part of it, including the spire, totaling four layers.
When combined with the Necromancer Tower, it automatically merged into a whole, changing from the original nine layers to thirteen layers.
Most importantly, the Necromancer Tower gained a new ability: it could release Samsara Karmic Fire, giving it powerful offensive capabilities.
This made Xia Mengqiu extremely envious.
The current Necromancer Tower could truly be considered a mythical-level resource.
Just as Zheng Dong was familiarizing himself with the Necromancer Tower's ability to release Samsara Karmic Fire, a group of Hell Minotaurs gathered.
The Hell Minotaurs were engulfed in scorching hellfire, could walk upright, and were humanoid undead. Their racial level was High King, and their strength was considerable.
There were seventeen Hell Minotaurs in this group. The leading Hell Minotaur had reached the King level in growth, while the rest were General level.