An hour passed in the blink of an eye. Under the squeezing pressure of that third-tier formation, most of the spiritual energy in the ore vein had been extracted and, after layer upon layer of conversion, stored in that crystal.
Although Xie Yuxuan had already reached the False Core Realm, controlling that third-tier formation was still a considerable burden for him.
Seeing that he was already struggling, Xie Yuxuan formed another hand seal and put away the formation flags.
Danger!
Just as Xie Yuxuan was preparing to put away the crystal ball that had absorbed a massive amount of spiritual energy, he suddenly sensed an aura of danger.
The next moment, two Sword Qi radiating a gloomy, frigid aura suddenly appeared beside Xie Yuxuan and slashed straight at him.
Seeing this, Xie Yuxuan could only stop collecting the crystal and turn around to deal with the two Sword Qi.
Roar!
As Xie Yuxuan formed another hand seal, a dragon's roar seemed to ring out. At the same time, a crimson Dragon-shaped Flame rose from his body and collided with the two frigid Sword Qi.
Soon, the Dragon-shaped Flame and the two frigid Sword Qi engaged in a fierce struggle. In the end, both sides dissipated.
Then Xie Yuxuan and the others saw a group of more than ten people flying over from the direction the Sword Qi had come from. Judging from the auras radiating from them, even the weakest among them had reached Foundation Establishment, while the two leaders had cultivation at the False Core Realm, just like Xie Yuxuan.
"Yin Wind Sword Sect, have you grown tired of living? How dare you attack the people of my Golden Sun Sect?"
The instant he saw this group, the disciple who usually guarded the ore vein recognized their identities.
The