At this moment, in the valley at the other end of Death Valley.
A lizard monster that was fighting a Warrior was controlled by a magic array. The Assassin and Archer in the team attacked at the same time and killed the lizard monster after a series of attacks.
This was a small team of class holders with an average level of 20. At this moment, other than the lizard that they had just killed, there were also a few corpses on the ground. They had just cooperated to kill a few Level 15 Brutal Lizards.
After the battle ended, everyone had a clear division of labor. The Priest healed the two Warriors and one Tank, the Prophet was responsible for collecting materials and restoring the team's mana, and the Assassin and Archer activated the detection alert.
"Everyone, work hard today. We'll be able to level up after killing another 10 Level 15 monsters!" the Prophet encouraged. She was the leader of the team, Hong Yuan'er.
"Captain, I feel that something is wrong today," the Priestess said softly. The others suddenly noticed that the sky in Death Valley seemed to be gloomier than before.
Hong Yuan'er looked at the changes in the sky. It did not look normal. Their party had been grinding in Death Valley for a month, but they had never seen such a situation.
"Change of plans. We'll take a break today and come back when the weather recovers."
As the captain, she had to consider the safety of the team at all times. This kind of abnormality had to be treated with caution.
The other team members did not object and immediately prepared to retreat.
However, at this moment, a violent tremor suddenly came from the ground. Everyone immediately gathered together and entered battle mode at the first moment.
No one knew what was happening, but the color of the sky was getting darker and darker. Then, the sky in the distance quickly turned black. In the next moment, it suddenly split open, and a huge crack that connected heaven and earth appeared!
Hong Yuan'er gasped when she saw this.
"Everyone, retreat!"
Everyone turned around and quickly retreated. Their faces were all extremely solemn and a little afraid, because they all knew what this meant.
The monsters from Heaven Vault were here!
"Roar!"
Countless monsters hissed from the huge crack, and in the next moment, countless black shadows flew out.
In an instant, dozens of flying monsters with half-rotten and half-white bones appeared in the sky.
They looked like half-rotten birds, but although they had no feathers, they flew extremely fast.
Furthermore, the monsters locked onto the few class holders who were running away. The strange birds let out a few fierce cries and quickly chased after Hong Yuan'er and the others.
As a Prophet, Hong Yuan'er's face turned pale when she sensed the level of the monsters in the air behind her. The highest level in their party was only Level 23.
However, the monsters behind them was actually a Level 35 monster from the Heaven Vault, the Bone Bird!
"F*ck! How can we fight a Level 35 monster!"
"What should we do? These monsters are so fast!"
"Everyone, don't panic. With the appearance of the Heaven Vault, the nearby cities should be sending their guards over. Hang in there!"
Hong Yuan'er encouraged the crowd as she ran forward, but her heart sank. With the ability of their team, could they hold on until the nearby guards arrived?
In the sand, Zhang Xuan leisurely picked up the drops of the Scorpion Spiders on the ground. In these ten minutes, he had killed nearly a thousand Scorpion Spiders and some monsters that lived in the sand.
A large area of sand was cleaned up by him in an extremely brutal way, and the dark red blood stained the sand.
At this moment, his EXP had already reached 75% of Level 8. This was the result of his 10 minutes of killing. However, the monsters around him were almost non-existent. There were only one or two that had escaped.
Zhang Xuan naturally didn't want to waste time on such scattered EXP. Therefore, after quickly collecting the nearby materials, he killed another batch of monsters that he had attracted and left the desert.
His next target was the gathering place of the Level 15 Brutal Lizards in the depths of Death Valley. It was the highest-level monster in the entire Death Valley and provided the most EXP.
However, just as Zhang Xuan walked out of the sand, he saw a few class holders running toward him from afar. Behind them were countless ferocious and terrifying strange birds.
Moreover, he also discovered that there seemed to be a large crack at the end of the sky. Even from so far away, he could feel the size of the crack!
After quickly recalling the information in his mind, Zhang Xuan suddenly realized that he might have encountered an invasion from the Heaven Vault.
The Heaven Vault was something that appeared when the game and this world merged. Every time the Heaven Vault opened, countless terrifying monsters would appear and attack humans.
Compared to ordinary monsters, the Heaven Vault's monsters pursued the philosophy of killing all humans in their sight. Hence, once the Heaven Vault opened, the class holders would have to exterminate all the monsters!
Looking at the screaming monsters hovering in the sky, Zhang Xuan gripped the giant scythe in his hand tightly and charged forward without hesitation.
He was ultimately a member of the human race. Since he had the ability, he naturally wouldn't stand idly by when facing the invasion of the Heaven Vault!
At this moment, the nearest Bone Bird was less than 40 meters away from this class-holder squad.
Suddenly, the Bone Bird accelerated and closed the distance in an instant. The Bone Bird roared and stretched out its sharp claws to grab the last Warrior of the team.
Suddenly! A few arrows with interference effects hit the Bone Bird, and the speed of the Bone Bird slowed down.
"You guys retreat first! I'll cover you!"
The Archer in the team stopped and shot a few arrows into the sky.
This was an Archer's exclusive interference skill. It did no damage but could effectively attract the aggro of monsters.
Many of the Bone Birds' attention was attracted, and they quickly rushed toward the Archer who was fleeing in another direction.
Everyone's heart sank when they saw this, but they did not hesitate at all. Everyone stopped in their tracks and turned around to support the Archer who was surrounded by a few Bone Birds.
The Mage's control magic circle and the Priest's blessing halo instantly formed around the Archer. The Warrior and the Tank also took the lead to block the incoming Bone Birds.
At this moment, everyone used their most powerful skills. Hong Yuan'er also summoned a ten-meter-tall elf phantom.
[Prophet's Protection]
This skill could share 75% of the damage for her teammates. The shadow had a maximum damage tolerance of 20,000. This was her strongest skill as an A-rank Prophet, but the cooldown was also extremely high.
However, as the Warrior and the Tank faced the attacks of five or six Bone Birds, the elf phantom was instantly shattered!