What comes to mind when mentioning the Demon Kings underground castle?

  A vast and complex labyrinth, treacherous and frightening traps, and... powerful and terrifying monsters.

  Thats the point. Any demon king will have a large group of demons serving him. Even other demon king candidates are the same. Brother Claynes Black Knight Corps is the most elite unit in the demon world, and Second Sister Liliths Dark Elf and Succubus Corps are deadly weapons that can kill without leaving any blood in the dark.

  As for the fourth sister Vivians command of the Black Dragon Legion, it was even more terrifying. The demons who were rampant in the demon world would be scared to the point of covering their heads and trembling with fear when facing that deafening roar. Even the relatively gentle fifth sister Nabellius possessed powerful strength that could easily overwhelm any force underground.

  This is also the orthodox route for every Demon King successor - after they start building their own underground castle, the Demon King successors will command their own army to sweep through all the intelligent races around the underground castle like a whirlwind, either taking them as slaves or taking them as guards.

  To put it bluntly, its a bit like the Age of Exploration, where old empires started by sailing across the ocean with invincible fleets to explore new continents. So even if they encountered indigenous people who were shouting and causing a ruckus, a few rounds of gunfire would be enough to send them running in all directions. Whether to capture slaves or build colonies depended on their mood at the time.

  Zhan En, on the other hand, was a complete and utter poor and unknown person who rose to power from scratch. This is not surprising, as the demon clan values strength above all else, and Zhan En had not shown enough power, so how could he easily gain the loyalty of his subordinates?

  Fortunately, Zhan En was very clear about this and did not think of finding help. Otherwise, his final outcome would probably be to be manipulated as a puppet.

  There was no way to get help from outside, so Zhan could only pin his hopes on the summoning crystal inside the dungeon. In fact, at the very beginning, Zhan had indeed had an opportunity to build a summoning crystal. Unfortunately, he was still in the demon realm at that time and couldnt expand the dungeon. So in the end, Zhan gave up building the summoning crystal and instead summoned Enya.

  It proved to be a very wise decision for Zhan En.

  However, the summoning crystal still needs to be built. To expand his power, he naturally needs more guardians. Zhan Yan cant just rely on himself and those mining goblins to protect his underground city. He looks down on the low-intelligence half-beasts and terrorclaws. Therefore, after completing the daily tasks given by the system and regaining the right to build the summoning crystal, Zhan Yan immediately chose to build the summoning crystal without hesitation.

  And then comes the day of fate.

  "Master, the summoning crystal has been constructed..."

  After re-examining the summoning crystal carefully, Becks finally stood up and spoke to Zhan in a timid tone. The current Becks was no longer the dirty dwarf slave she used to be. The dirty long robe had been replaced with a black and white maid uniform, along with white stockings and small deerskin boots, which actually gave her a bit of a maids demeanor.

  If it were on Earth, Jenn would probably be arrested for employing child labor - although the girl in front of her, who looked like she was only around ten years old, was actually nearly eighty years old.

  "Alright."

  Upon hearing Becks report, Zane waved his hand and Becks lowered her head with a hint of joy on her face, obediently retreating to the side.

  At first glance, Beatrix seemed no different from before. But Jain knew that after receiving her demonic crest, Beatrix had changed.

  Unlike the contract with the law enforcer and spiritual control, the demon clans imprint is not a forced brainwashing that makes the other party an idiot who knows nothing but the master. On the contrary, the demon clans imprint is more sinister, cunning, and harder to decipher.

  It will not force the branded person to be loyal and obedient, but rather slowly exert influence in their heart, hinting to them that the one in front of you is your master, as long as you complete the tasks he gives you, you will feel very happy and blessed.

  And when the one being branded completes their task, they will feel a strong sense of happiness and satisfaction. This will also make them work even harder for their master, and as this gradually becomes a cycle, the one being branded will automatically sink into it, without needing any brainwashing, becoming the demon kings most loyal subordinate and servant.

  Apart from this, the personality, knowledge and memory of the person being imprinted will not change in any way.

  Its just like Becks, she still clearly remembers her hometown, her parents, and her friends. Her feelings for them havent changed at all. However, she wont think about returning to her hometown again, under the influence of her imprinting, whats most important to Becks right now is serving her master.

  Compared with this, returning to ones hometown is almost negligible.

  This is also why there are no records in all historical accounts of anyone who has fallen into the demonic tribe being able to turn over a new leaf and return.

  For those who have accepted the demonic tribes imprint, it is meaningless to try to awaken them no matter how hard you try. Because they are not being controlled by their minds, nor are they brainwashed, but rather they voluntarily submit to their own masters. What can you do about such people?

  Unfortunately, the demonic seal is not without its drawbacks. That is, unless the other party is willing or the difference in strength between the two parties is too great to resist, it can be implanted with a seal, otherwise it will be cancelled out. Otherwise, if the demonic seal was really that powerful, then the demon clan would have long since run out of this dark and unseen underground to unify the mainland.

  However, for Zhan En, the demonic tribes seal had another use...

  Lets skip the idle talk and get down to business.

  Looking at the summoning crystal in front of him, Zhan En let out a light sigh. Then he raised his head and glanced at the oil-pop steel aluminum... cough, Shi Yinbao Jing displayed on the system screen in front of him, and then furrowed his brow.

  "The day of summoning, the time of betting lives. Is it Tif or Oti... No, whether its Tif or Oti depends on what happens next."

  Although it sounds tragic, Zhans mouth was still with a hint of sinister smile. The reason is simple, for this underground castle systems summoning mechanism, Zhan had already figured it out clearly.

  Although its not to the point where he can get whatever resources he wants and produce whatever troops he wants with ease, Zhan Yan is able to easily increase his chances of getting rare troops by adjusting his resources. This is a result of him going through thousands and tens of thousands of experiments and data modeling.

  I didnt expect that due to the extremely rare summoning rate, I would be targeted by the game company, and then they would find a trivial reason like an AFK script to ban my account. This isnt even an MMO, and its not like Im manipulating characters or running away with macros, but just using a mouse auto-clicker is enough to get banned?

  But it doesnt matter, because before being struck by lightning and crossing over, Jian had already increased the rare summoning rate in the main server system to 100%. Haha, I really want to see what kind of expression the game company will have when they find out that all players, regardless of whether they pay or not, are frantically summoning rare troops as if they dont care about money... Wait a minute!

  At this thought, Zhan Ens movements suddenly came to a halt.

  Just now, he suddenly discovered something very important.

  It was after modifying the system that I was struck by lightning and crossed over here, so... ...does this mean that the current system is also modified? This means that I can summon rare troops 100%!

  Thinking of this, even Zhan En couldnt help but feel a little excited. Although rare troops also have many types, there are not a few high-scoring and low-ability ones among them. But no matter how low their ability is, they are still rare troops! No matter which one comes out, arent their data all higher than those of ordinary troops? And this is his own built-in system, so he doesnt have to worry about the game company modifying it back!

  I knew it, I should have changed all system properties to 99999 at the beginning...

  Now Zhan En is somewhat regretful, originally just to vent his anger and disgust at the other party, he only changed the rare probability. If he had known there would be today, he should have changed all the data for everything, by then it wouldnt matter if people or Buddha tried to stop him... Forget it, now saying this doesnt make any sense.

  Thinking of this, Zhan En also quickly regained his composure. Whether or not, just try the experiment to know. So Zhan En didnt think much anymore, but stretched out his hand and swiped through the air. Soon, another line of system prompts appeared.

  "Crystal Summoning Initiated, Please Insert Summoning Materials"

  Even if its 100% rare, there is still racial selection, and only through a certain proportion of matching can you summon the race you want. Zhan En wanted to summon powerful troops like Bone Dragon or Vampire, but unfortunately, he didnt have enough resources, nor did he establish a treasure house and graveyard, so even if he adjusted to 100% rare summoning rate, it was absolutely impossible to summon the corresponding troops.

  Moreover, given Zhans current situation, even if he were to get a rare unit, it wouldnt necessarily be what he needs. Rare units are indeed powerful, but they also consume resources at an alarming rate. Right now, Zhans underground city is impoverished and struggling to produce enough food; barely enough for him to eat, let alone supporting several more mouths to feed.

  So its best to have a small appetite, low consumption and be able to fight... The decision is yours!

  Having thought of this, Zhan En already had a plan in mind. He saw his fingers move slightly in the air, and soon, he had adjusted the resources.

  Ore (15) Mercury (10) Gemstone (15) Crystal (9)

  Resource investment confirmed, summon?

  Summon!

  The crystal begins to vibrate.

  Three upright crystal pillars rose and fell, emitting a soft, magical glow that seemed to fluctuate like ripples. Soon, in the center of the crystal pillar arrayed in a "pin" shape, a dark, deep spatial crevice slowly opened. A whistling cold wind blew out from within, echoing through the narrow space. The air began to grow cold and damp, and a layer of white frost appeared on the ground...

  The deceaseds whisper sounded in his ear, and when he heard this, a smile finally appeared on Zhan Ens face.

  It looks like he bet right.