Seven Hells Tower, 7th floor.
Xiao Yun discovered that every time he entered the Seven Hells Tower, his strength underwent earth-shaking changes.
The first time he entered, he had not yet become a Heavenly Venerable.
The second time he entered, he had quickly advanced to the Heavenly Venerable realm.
And now, he had already reached the Mind Power Immortal realm.
In the Great Mind World, that made him an Ancient God.
Before him, three Ancient Gods were imprisoned.
Xiao Yun's gaze swept one by one over Wujie, Sacred Heart's master, the sallow-faced old man, and the red-haired middle-aged man.
When he had first seen these three immortal experts, he had been deeply shaken.
Now, however, he stood on the same level as them.
"You... how is this possible?" The sallow-faced old man stood up, staring at Xiao Yun with wide eyes.
Wujie, too, stared at Xiao Yun in utter disbelief. "Ancient God... has your Heart Canon broken through the twentieth level?"
"This is impossible!" The red-haired middle-aged man also revealed an incredulous expression.
The gray-robed Realm Lord's pupils contracted sharply as well.
For super experts like them, who had lived and been imprisoned for countless ages, a few years or decades did not count as time at all.
But how long had it been since Xiao Yun last left?
In such a brief span, Xiao Yun had actually reached their level.
How could they not be shocked?
"Senior, I've already reached the Immortal realm. You haven't forgotten what you promised me last time, have you?"
Xiao Yun was delighted to see the shocked expressions of the four people before him. Then he fixed his gaze on the gray-robed Realm Lord and spoke with a smile.
The gray-robed Realm Lord stared fixedly at Xiao Yun, light flickering in his eyes. His