I, a prison guard in the Heavenly Prison, secretly became invincible thanks to the system.

Chapter 159 Yin Saint Demon Lord

Ye Kang glanced back and saw that apart from the burly Iron Fist Sect man who was acting suspiciously, no one else paid any attention to him.

Never mind, let's just try it.

With a thought, the universal key in his system space lit up instantly, and then a key-shaped seal suddenly appeared on the bronze door.

【Ding】

[Ancient restriction detected; master key to open.]

[Host has successfully activated the restriction by consuming one Universal Key]

As the system beeped, the bronze door suddenly clicked open, revealing a white light. Then, the door cracked open, instantly drawing everyone's attention.

The martial artists turned around in disbelief, staring at the bronze door in astonishment.

The next second, before Ye Kang could react, a suction force came and he was sucked in directly. Behind him, the burly man from the Iron Fist Sect roared, "Don't even think about taking it all for yourself!"

The burly man rushed over, stretched out his large hand, and was immediately sucked in as well.

At this moment, other martial artists also rushed over, especially the four sect leaders at the eighth level of the middle realm, who arrived in front of the bronze gate almost instantly.

But it was still too late; the bronze door had already closed, just as it had before.

Sect Leader Yunhe exclaimed in shock, "Why is this happening! How could this door suddenly open!"

The bald-headed leader of the Iron Fist Sect also said worriedly, "That playboy must have done something. Don't worry, everyone. My junior brother Hao has gone in too. I believe he will catch that kid and get to the bottom of it."

The group exchanged glances, all revealing deep confusion.

at the same time.

Ye Kang's vision went white, and the next second, he walked out of the bronze door and arrived in a huge room with a wide view.

Elder Hao of the Iron Fist Sect also ran out shouting, looking around in bewilderment, just like Ye Kang.

"This is where!"

He glared angrily at Ye Kang, his face full of resentment.

"What did you do, you brat! Why did you suddenly open the bronze door!"

Ye Kang ignored him and walked straight ahead.

A huge black throne was placed in front of them. There was no aura flowing on it. It looked like it was made of ordinary black iron, but its shape was very sinister. White bones and skulls were paired with long swords and sharp blades, making it look particularly eerie.

But Ye Kang's gaze was not on the throne, but behind it.

A strange portrait hangs on the back wall. The portrait depicts a middle-aged man dressed as a Confucian scholar, so lifelike that it seems as if he were alive.

But this seemingly frail scholar sat on that black throne, casually flipping through a book.

Seemingly sensing Ye Kang's gaze, the scholar in the portrait suddenly raised his head and stared at Ye Kang with a grin!

"hiss!"

Ye Kang and Elder Hao both widened their eyes, their hearts nearly stopping.

The people in the painting have moved!

This is impossible!

【Ding】

[System Notification: A wisp of martial arts divine thought from a powerful martial artist has been detected. Try to comprehend the martial arts within it before the divine thought dissipates; you may gain unexpected insights.]

"!"

Ye Kang was stunned once again!

It was actually martial arts divine sense!

This is something that only powerful experts who have surpassed the Innate Realm could leave behind!

While he was still in shock, the person in the portrait spoke with a smile.

"My two young friends, it is truly a great blessing in life to have the opportunity to meet you."

When the gentle voice rang out, Elder Ye Kang and Elder Hao felt their scalps tingle and dared not even breathe heavily.

The scholar continued, “You two need not be afraid. This is merely a wisp of my martial arts divine thought. It will dissipate soon after I finish speaking. This place is my palace. You may call me the Yin Saint Demon Lord. My true body has long since abandoned this place, but I always wanted to leave behind some trace, so I was born.”

As the scholar closed his book, he stood up in the world of the painting, a look of nostalgia on his face.

"Since you two young friends have come here by chance, you may take whatever is left here. In addition, I have left a small gift behind the portrait, please take it as well. You don't need to worry, I will disappear soon. It is not a backup plan, nor is it possession or rebirth, nor is there any conspiracy. It is just something I did on a whim."

The Confucian scholar spoke sincerely, and then slowly sat back on the throne depicted in the painting.

The next second, it returned to its original state, as if nothing had happened. It seemed that the existence of this wisp of divine thought was just to tell them that his name was Yin Sheng Mo Jun.

So abstract?

Ye Kang was momentarily stunned, but behind him, Elder Hao's expression had completely gone mad.

"There's treasure behind that portrait! Get out of my way!"

He swung his iron fist straight at the back of Ye Kang's head, clearly aiming for a fatal blow.

Ye Kang's expression darkened, and he used Shadow Step to teleport behind Elder Hao, but he did not make a move immediately.

Elder Hao found it strange that his attack missed, but greed had clearly masked this oddity.

He rushed straight to the portrait and carefully lifted it up.

Ye Kang still didn't make a move. He thought it best to let others do it first, in case there was a trap.

However, he was clearly overthinking it. Elder Hao not only did not encounter any danger, but he also found a hidden compartment behind the portrait and easily took out a long box from it.

Just as he was overjoyed, several sword energies of a hundred flowers suddenly attacked, piercing through his head, heart, and dantian.

All vital organs were easily destroyed, and he died on the spot in an instant.

Even at the very end, his expression remained cheerful.

With several hundred points of enlightenment credited to his account, Ye Kang slowly walked over and said, "You tried to kill me just now, so naturally I can't spare you. Have a safe journey."

After saying that, Ye Kang picked up the long box and carefully examined it again.

"There really wasn't a trap! This Demon Lord is just having fun!"

Ye Kang was shocked. There was no scene of a remnant soul possessing another body, nor any terrifying traps or snares. It really was just that simple.

This Yin Saint Demon Lord seems to be a true entertainer, having deliberately left some gifts for the younger adventurers to show off his awesomeness.

Ye Kang, without any ceremony, opened the box, revealing an ancient, one-handed longsword. It was entirely black, without any patterns or embellishments, and the blade was narrower than his own demon sword. It also lacked a matching scabbard.

Ye Kang was startled and couldn't help but reach out to touch it.

Instantly, information about the knife automatically entered Ye Kang's mind.

"The sword is named Azure Sky, left behind by the Yin Saint Demon Lord. His descendants must kowtow three times on the spot, or he will not acknowledge it as their master."

"?"

The sentence Ye Kang couldn't help but utter completely baffled him.

You wicked Yin Saint Demon Lord, huh? Very well, is this how you play the game?

You think you can just take a knife from someone and expect them to kowtow to you three times? You're really something else!

Ye Kang mentally complained.

But this is a sword that can recognize its master, which is definitely a divine weapon that surpasses the innate level. It just so happens that my own demon sword can't keep up with it. It's like a pillow being delivered to someone who's sleepy. I really can't refuse it.

Ye Kang appeared honest, but he was even more honest in his heart. He immediately knelt down on the spot and kowtowed three times to the portrait of the big shot.

The next second, a wisp of azure-blue blade energy seeped out, and the Azure Sky Blade actually trembled!

Ye Kang immediately understood, and forced a drop of blood from his fingertip into the blade.

Phew!

The Azure Sky Blade flew into Ye Kang's hand automatically, as if it were made by nature. He could wield it with great ease, and could release several blade energies at will, as if the blade was born to belong to him.

"Good, good, good! Yin Saint Demon Lord, right? I love you to death!"

Ye Kang laughed heartily, then remembered something and quickly looked at the portrait.

"Oh no! The divine light is about to dissipate!"