Thus, under Sikong Jing's lead, the group found another hidden place.
Sikong Jing gave them another battlefield of yin spirit evil energy. After their spirit shadows had been tempered, they all began Sword-Refining Extreme Prison.
"It's actually... Sword-Refining Extreme Prison..."
Only now did Zhan You and the others learn what Sikong Jing had taught Yu Tang's thousand people.
Watching the thousand undergo Sword-Refining Extreme Prison, Zhan You and the others were shaken beyond measure. In their eyes, each of those thousand seemed to have become a sword, while waves of ghostly wails and wolfish howls rose endlessly from their bodies...
They could feel the frenzied agony endured by Yu Tang's thousand.
Yet whether it was Xie Men or anyone else, they all gritted their teeth and held on.
They finally understood why those thousand had improved so quickly. This method of refining the extreme prison was terrifying.
"So this is the Sword Clan's method?" Zhan You murmured.
The moment his words fell, Sikong Jing's voice came from behind him. "You know of the Sword Clan, and you know Sword-Refining Extreme Prison as well?"
Even the Feather Transformation Emperor knew only bits and pieces about Sword-Refining Extreme Prison.
Zhan You spun around and quickly said, "Some time ago, I heard Emperor Yu'e mention it in passing... Right, she seemed to say it had something to do with you. Could it be that you are the mysterious Sword Clan?"
This explanation made Sikong Jing smile freely.
It seemed Emperor Yu'e had also tried his Sword Extinction's First Eight Chapters, then casually mentioned them to Zhan You.
After pondering briefly, Sikong Jing said with a smile, "I am from the Burial Emperor Spirit Seal Realm, so naturally I am not yet part of the Sword Clan. But Senior Brother Zhan, would you like