Chapter 669: Chaotic Situation

“You’re really shameless!”
As soon as the evil spirit struck, the Sword Sect’s leader and the old monster Nan Gong both took action, and the Sword Forging Hall was instantly filled with swirling sword energy…
With a muffled groan, the Heavenly Crystal slipped from his hands. The evil spirit recoiled in disbelief, staring at the Heavenly Crystal, which continued to emit astonishing sword energy:
“What an ancient divine weapon—truly living up to its reputation! No wonder the Elder wanted us four to retrieve it.”
“The Elder?”
“Hmph, enough talk. This Heavenly Crystal is mine!” The evil spirit sneered and suddenly let out a loud howl—its shrill sound piercing the sky.
In the blink of an eye, as everyone was stunned, it joined the battle against the Sword Sect’s leader and the old monster Nan Gong!
Meanwhile, outside the Heaven-Shaking Fortress, countless dark figures rapidly appeared, standing out sharply against the snow…
Numerous disciples of the northern clans stared in shock, unsure of what was happening. It wasn’t until they saw the dense group of armored men charging menacingly toward them that they finally realized what was at stake and rushed inside the fortress in panic.
Those who weren’t quick enough were slashed down mid-way, their blood staining the snow beneath them…
“Demonic siege!”
“Retreat to the fortress quickly!”
The disciples of the northern clans screamed as they fled at top speed.
From the dense crowd of dark figures behind them, the same cry echoed repeatedly:
“Forward!”
“Sweep through the Heaven-Shaking Fortress!!”
The fierce killing intent made the normally calm disciples of the northern clans feel as if they were in a hellish realm. In the freezing snow, they felt even colder all over…
…Inside the Heaven-Shaking Fortress, warriors like Bei Xiao were already engaged in fierce battle with the Four Evils of Yunling.
Hearing the warnings from outside, the disciples of the Sword Forging Hall, who had been pressured by the intensity of the battle and forced to retreat behind the high walls, immediately drew their weapons and rushed out:
“Let’s go!”
“Fight these evil outsiders to the death!”
Xing Kai and Wan Jian mixed among the crowd, closely watching the group of experts from the Sword Sect and the Nan Gong family.
“Disciples of the Sword Sect, heed my order—give your all to help our friends from the northern clans defend against the invaders. Do not disobey!”
“The Nan Gong family has always had a good relationship with the northern clans. The trouble at the Heaven-Shaking Fortress is also caused by us. People of the Nan Gong family, hurry to help!”
The voices of these two mythic-level experts echoed from the Sword Forging Hall like distant thunder, clearly audible inside the fortress.
“Yes!!”
The troops from both sides stationed near the Sword Forging Hall, along with many experts inside the fortress, rushed out like bullets, flying across rooftops toward the outside of the Heaven-Shaking Fortress.

Outside the Sky-Shaking Fortress, a fierce battle soon erupted! The sounds of weapons clashing filled the air… Seeing this, he, who had been lingering not far from the Sword Forging Hall, observing the intense fights among its masters with joy, finally showed an unprecedented seriousness! There was not a single person left near the Sword Forging Hall… Staying here any longer would only arouse suspicion from the mythic realm masters from various factions. But now, the Sky-Shaking Fortress had split into two battlefields: one was the fierce struggle between the northern clans’ defenders and the other was the battle for the Sky Crystal! Although he couldn’t get involved in the fights between the powerful beings in the mythic realm, he hadn’t come to the Sky-Shaking Fortress to help the northern clans defend it. Moreover, he hadn’t received any system task prompts, meaning he had to figure things out on his own and make his own choices. “…” Happy suddenly felt stuck. He tried to find Wan Jian, but this guy was nowhere to be seen. “Wan Ma” was also unknown. Just as Happy hesitated, not knowing what to do, a flash of inspiration struck him—he remembered the Sword Sect team he encountered before entering the Sky-Shaking Fortress. The back door!! With that sudden insight, Happy’s mind raced. Why would the Sword Sect place their own people at the back door, and even send a group of fighters whose strength was barely significant against the Sky-Shaking Fortress? Given the number of powerful beings inside the fortress now, the group that had hijacked the caravan earlier was far from a threat—almost a mistake… But since it was the arrangement of the Sword Sect’s master, there must be some purpose behind it. With a quick glance, Happy gritted his teeth and made up his mind. Since he couldn’t intervene in the battle for the Sky Crystal right now, instead of wasting time here, he might as well go to the back door to see what was going on—maybe he’d discover something. With a leap, Happy soared onto a nearby roof, determined the direction of the back door, and rushed there without hesitation… … At this moment, the front of the Sky-Shaking Fortress was in full chaos—disciples of the northern clans, fortress defenders, and Sword Forging Hall disciples, together with masters from the Sword Sect and the Nan Gong family, were locked in battle with the warriors sent by the Four Immortals of Yunling, turning the snowfield red in an instant… … The deafening cries of battle didn’t affect Happy’s progress. Whoosh! Moving swiftly between rooftops, he quickly approached the back door. Sure enough! Two Sword Sect disciples disguised as guards were still there, but it seemed the back door was also under attack by the Four Immortals of Yunling—many Sword Forging Hall disciples were also engaged in fierce combat there.

The two guards, afraid to reveal their sword skills and combat abilities, retreated to the back, unwilling to engage in battle. Their eyes darted around constantly, as if searching for a way to leave.
“…Leave?”
Kai Xin immediately frowned.
The Sky Crystal was still in the Sword Forging Hall, and even the sect leader hadn’t left—so why would these two want to leave?
At that moment, Kai Xin, not daring to neglect anything, activated the Nine Yang Divine Skill at full capacity, rapidly expanding his spiritual perception to scan the area within fifty meters.
As expected, he found the remaining twenty-odd disciples of the Sword Sect in a nearby room…
A group of people were hiding inside, peering outside through the cracked window, all looking worried with furrowed brows, showing no intention of sending reinforcements to Shake Heaven Fortress.
Kai Xin naturally understood that it was inconvenient for them to show themselves. But since the Sky Crystal wasn’t obtained and they had stopped their actions early, did that mean their mission had been canceled or completed?
“The Sky Crystal is still in the Sword Forging Hall… Cancellation is impossible… Could it be that the mission is complete?”
Kai Xin became even more puzzled!
Inside Shake Heaven Fortress, nothing seemed to have happened, and the Sky Crystal was still there. Perhaps these people’s mission wasn’t related to the Sky Crystal at all but involved some other task.
Kai Xin immediately held his breath and silently hid in a nearby room, focusing his attention on that house, waiting to see what would happen.
Sure enough, as expected…
After waiting for a while, it seemed many casualties appeared outside, and the number of people gradually decreased.
“Since someone else has completed our mission, there’s no need for us to stay here anymore,” said the young man at the head of the group in the room, lowering his voice. “Watch my signal—let’s all rush out of Shake Heaven Fortress together!”
Hearing this, Kai Xin’s heart jolted. Suddenly, it seemed he understood the mission of these Sword Sect disciples.