When Zhao Letian mentioned the Yin Yang Demon Eyes, those two people no longer concealed their aura and revealed their true cultivation.

Both of their cultivations were incredibly powerful, both at the Sect Martial Sixth Realm, far beyond what Zhao Letian could contend with.

However, Zhao Letian's Corpse Ape was more than capable of handling these two individuals.

"Green Zombie? And it's refined from the body of a Purple Lightning Thunder Ape?"

"Sect Martial Sixth Realm Peak? Be careful!"

The two men showed serious expressions and stared fixedly at the Corpse Ape as if facing a formidable enemy.

As practitioners of evil and crooked ways, they were acutely aware of how terrifying this type of Green Zombie could be.

This Sect Martial Sixth Realm Peak Corpse Ape was far more formidable than a regular demon beast at the peak of the Sect Martial Sixth Realm, and could even contend with human martial artists at the high-level Sect Martial Realm.

"Kill them!"

A cold murderous intent flashed in Zhao Letian's eyes as he suddenly said in a deep voice.

"Roar!"

As soon as his words fell, the Corpse Ape roared angrily at the two men, baring its sharp fangs, and in a swift movement, its massive body turned incredibly agile, transforming into a very blurry green afterimage, and lunged directly at the two men.

"Evil creature, stop your presumptuousness!"

The shorter man shouted angrily, withdrawing a slim long saber from his hands, rallying strong True Yuan Power, and directly slashed at the Corpse Ape.

At the same time, the taller man solemnly took out a huge heavy sword and slashed at the Corpse Ape from another angle.

"Roar!"

However, facing the powerful Spiritual Artifacts of the two men, the Corpse Ape showed no fear. It roared in anger, completely ignoring the tall man's heavy sword, and directly slapped the short man.

"Crack!"

In the next moment, the giant palm of the Corpse Ape solidly struck the slim curved saber from the short man, directly shattering it into several pieces, and without losing momentum, also struck the short man, sending him spitting blood and flying far away.

"Clang!"

Simultaneously, the heavy sword in the hands of the tall man solidly struck the shoulder of the Corpse Ape, but the result sounded like it hit hard metal, producing a dull sound of metal striking stone.

"Roar!"

Following that, the Corpse Ape turned its head, suddenly raised its arm swiftly like lightning, and caught the tall man's heavy sword. Then, with another arm swinging, it directly slapped the tall man, making him spit blood and fly far to the side.

"Such strong physical strength."

Zhao Letian, watching from below, revealed a look of surprise and couldn't help but exclaim.

The Corpse Ape's body, harder than metal, even those mid-grade Spiritual Artifacts from the two men could not break through its physical body, only leaving very superficial marks on it.

Such formidable physical strength was definitely not something a normal Sect Martial Sixth Realm demon beast should possess. Only a zombie like the Corpse Ape, refined and transformed through artificial means, could reach this almost abnormal level.

As for human martial artists of the same rank, they were completely incomparable to the physical strength of this Corpse Ape.

Of course, Zhao Letian, possessing the Dragon Soul and Dragon Blood, and who had practiced the "Nine Heavy Profound Armor Technique," and regularly consumed Qingluo Wine to temper his body, might be able to match this Corpse Ape in physical strength after reaching the Sect Martial Sixth Realm.

"Darn it, this creature's physical strength is too formidable; we can't fight it head-on."

"Since that's the case, we can only use the Ghost King Stele!"

"Alright, let's use the Ghost King Stele!"

After those two flew dozens of yards away, they finally stabilized their bodies, intently staring at the Corpse Ape with eyes filled with fear. After a brief discussion, they formulated a strategy.

In the next moment, a flash of Spirit Light appeared in their hands, and they each took out half a tombstone.

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The tombstones in their hands had no inscriptions, but each bore half of a grotesque and terrifying ghost face.

"The Ghost King Stele? This doesn't seem like a Spiritual Artifact, but rather a special treasure."

Zhao Letian's gaze sharpened as he carefully observed the tombstones in their hands, thinking to himself.

Those two tombstones exuded an extremely sinister and evil aura at a glance, making people dare not take them lightly.

"Boy, do you think you can contend with us, the Yin Yang Demons, just by having a Peak of Sect Martial Sixth Realm Corpse Ape? Too naive. In front of the Ghost King Stele, your Corpse Ape has no chance at all."

"Hmph, to die in front of the Ghost King Stele, you and this Corpse Ape can be proud of yourselves in this lifetime. Once we kill you, I will imprison your Divine Souls in the Ghost King Stele, to battle for me forever."

After taking out the Ghost King Stele, those two suddenly gained much confidence; they no longer bothered to wipe the blood from the corners of their mouths and coldly watched Zhao Letian and the Corpse Ape, speaking indifferently.

"Swoosh! Swoosh!"

In the next moment, those two suddenly threw their respective half-tombstones into the air, and then, the two pieces merged into one, forming a complete tombstone where the ghost face became even more clear and fierce.

"Woo! Awooo! Roar!..."

Following that, a series of ghostly wails and howls emerged from the Ghost King Stele, along with a thick green ghostly fog. Simultaneously, the temperature at the scene plummeted, and a cold, sinister aura instantly enveloped Zhao Letian and the Corpse Ape.

"Hisss!"

Just then, those two suddenly bit their tongues and sprayed a mouthful of Essence Blood onto the Ghost King Stele.

"Aw! Aw! Aw!..."

Immediately afterward, the ghost face on the Ghost King Stele twisted violently, turning into a dizzying green vortex. Then, one after another, frightening ghosts surged out, heading straight for Zhao Letian and the Corpse Ape.

"Are all these ghosts at the Martial Realm level?"

Zhao Letian's pupils constricted, utterly shocked.

In just a moment, the Ghost King Stele had unleashed hundreds of ghosts, and their numbers were still rapidly increasing.

Most importantly, at least all these ghosts were at the Initial Stage of Sect Martial Realm, and there were even quite a few ghosts at the Middle Stage of Sect Martial Realm.

Zhao Letian didn't know if the Corpse Ape could withstand so many ghosts, but one thing was certain—he definitely couldn't.

If these ghosts swarmed him, they would surely tear him into pieces instantly.

"Roar! Roar! Roar!..."

Just as Zhao Letian was preparing to take out his Spiritual Beasts and Puppets to contend with this army of ghosts, several thunderous roars suddenly emanated from the Ghost King Stele.

Then, several gigantic ghosts, each several dozen yards tall, burst out from inside.

Moreover, these gigantic ghosts all possessed the formidable cultivation of the High-level Sect Martial Realm.

Seeing this scene, Zhao Letian's heart sank. Even if he took out his Spiritual Beasts and Puppets, he had no means of contending against these high-level Sect Martial Realm ghosts.

If Master Yu were here, he might still have a chance of survival.

However, although Master Yu is on his way, he can't be relied upon to arrive any time soon.