Seeing this, Tang Zheng immediately raised his withered butterfly knife and slashed at the monsters that had just poked their heads out.

It's a pity that the number of monsters is too terrifying, Tang Zheng and Tang Seng have just killed those monsters that are about to invade, and the second wave of monsters has already leaned out of the staircase.

The huge number of monsters is far from being something that Tang Zheng and Yang Yueying can stop.

Soon, a monster finally broke through the staircase and stepped its scaly hooves onto the ground on the fourth floor.

In just a second, it was split in half by Tang Zheng's hard blow.

The monster's hot purple blood splattered on Tang Zheng's face, and Tang Zheng didn't bother to wipe it, so he fought with several other monsters that crawled out of the staircase.

Although Tang Zheng's level has been increased by two levels in the previous battle, the monsters seem to be endless, and Yang Yueying's level is now a little low, and most of the pressure is on Tang Zheng's body, so after a while, the staircase was broken by the monster frenzy, and Tang Zheng and the two of them had to retreat while fighting.

After the monsters broke through the staircase, they lost the terrain restrictions and frantically pounced on Tang Zheng and the others like tigers on the mountain.

For a while, Tang Zheng and the others gradually fell into disadvantage.

Tang Zheng's body was already faintly bloodstained, he gritted his teeth, and did his best to resist the attack of those monster frenzy, so that the pressure on Yang Yueying, who was of low rank, could be less.

At this time, Yang Yueying's spirit suddenly shook, and then her attack strength and speed had a good increase.

Tang Zheng knew that Yang Yueying had been upgraded.

Tang Zheng breathed a sigh of relief, it seemed that Yang Yueying was already level five, this was not a weak level, and she also had a rare quality weapon in her hand, so Yang Yueying's combat power at this time would be much worse than Tang Zheng.

In other words, under the attack of a huge number of monster frenzy, Tang Zheng's pressure was reduced a lot due to Yang Yueying's upgrade.

In fact, it is true that after Yang Yueying's upgrade, Tang Zheng, who was originally fighting and retreating, was able to gain a firm foothold under the monster frenzy at this time, and occasionally pushed forward.

Tang Zheng and the others fought back and forth for a while with the frenzy of monsters that were numerous but restricted by the narrow staircase, and finally as the sound of the system in Tang Zheng's mind sounded, this stalemate collapsed in an instant.

"Congratulations on the upgrade! Current Host Level Lv9"

"Hint: The current skill points have been exceeded, it is recommended to increase the skill level"

"Current Skill Point: 125"

As the system prompt fell, Tang Zheng, who was fighting fiercely with the monsters, secretly made a mistake.

How could he have forgotten the Kazan skill of Sword Soul that he had learned not long ago?

After raising his hand to shake the monster in front of him back, Tang Zheng gave an order in his mind.

"Upgrade all skill points to the Kazan of the Sword Soul."

Soon, the voice of the system sounded in Tang Zheng's mind.

"Kazan of Sword Soul has been upgraded."

"The current Kazan level of Sword Soul is: Lv5"

After Tang Zheng slashed to death the monster that attacked him, he immediately gave another order in his mind.

"Release the Kazan of the Sword Soul!"

As soon as the order was given, a huge red formation centered on Tang Zheng spread out to his surroundings in an instant.

After the formation of the formation, Tang Zheng felt an unprecedented strength surging out of his body, and then an irrepressible fierce battle intent instantly occupied his heart.

"Kill!"

Tang Zheng felt that his body was about to be blown up by the blazing battle intent in his heart, so Tang Zheng roared violently, and then he rushed forward with the withered butterfly knife in the lead.

After cutting melons and vegetables all the way and putting down all the monsters along the way, Tang Zheng's inner fighting spirit became even stronger.

Tang Zheng slashed at every monster around him, he didn't feel any pain or tiredness, he felt as if he was possessed by a god of war at this time, and his powerful strength and monstrous battle intent made him want to stop.

"That's power!"

Tang Zheng secretly exclaimed in his heart, but Kazan, who was only a fifth-level Sword Soul, could actually bring him such a powerful combat power!

And at this time, how excited Tang Zheng's fighting spirit was, how bloody Yang Yueying was beside him.

Compared with Tang Zheng's sky-high fighting intent, Yang Yueying is more frightening and cruel.

Yang Yueying's body was already stained with the blood of monsters at this time, and her claws slashed over the bodies of those monsters from time to time, and every time her claws slashed through a monster, four pillars of blood mixed with internal organs would gush out from her side.

Yang Yueying slaughtered those monsters frantically without saying a word, and every monster he killed was all turned into pieces of flesh in a place, and there were no corpses.

Her cruelty made Tang Zheng on the side feel a sense of fear.

After slashing the last monster that invaded the fourth floor to the ground, Tang Zheng grabbed Yang Yueying, who was full of madness and wanted to jump down from the staircase to continue killing, and then shouted to him: "Don't be impulsive! The duration of this great array is coming to an end, so let's hurry up and pick up the items dropped by the monsters on the ground, and prepare to resist the next monster attack! ”

After Tang Zheng said these words, the large red array summoned by him instantly turned into a little starlight and dissipated.

The duration of Kazan of Blade Soul is over.

After the Kazan skill of the Sword Soul ended, a touch of indescribable shock suddenly appeared on Yang Yueying's face full of madness.

"Tang Zheng, what the hell is that formation you summoned!"

Tang Zheng was puzzled: "What's wrong with a group strengthening sexual skills?" ”

Yang Yueying shook her head slightly, and then a rare look of solemnity appeared on his face: "No, that formation is definitely not just a group enhancement effect. ”

Tang Zheng asked strangely, "Then what else?" ”

Yang Yueying looked at her body stained with monster blood, and then said to Tang Zheng in a somewhat low tone: "It can also dig out the darkness in a person's heart, and take this opportunity to stimulate the strong bloodthirsty will in that person's heart, just now, I was like that, after the formation emerged, my heart remembered my dead family without warning, and then, I lost control..."

Tang Zheng looked shocked, and just as he wanted to speak, he was interrupted by a strange roar from downstairs.

After hearing the roar, Tang Zheng's heart suddenly appeared a touch of unease, and when he hurriedly urged Yang Yueying, who was in a daze, to quickly clean up the fallen objects on the ground, a violent explosion was remembered at the narrow staircase on the fourth floor.