From subtle cues, those with a keen eye can instantly tell that this strike's power is extraordinary, likely not inferior to an attack of the Upper Heaven Immortal Realm.
It's important to understand that after reaching the Heavenly Immortal Realm, each level is vastly superior to the previous, incomparable to other realms, with the difference between each layer described as heaven beyond heaven.
The concept of the Minor Heavenly Immortal Realm and the Upper Heaven Immortal Realm are entirely different.
Most high-level cultivators, after reaching the threshold of the Heavenly Immortal Realm, halt at the Minor Success for life. Relying solely on resources for advancement becomes ineffective, as the normal cultivation methods cannot escape the relationship between absorption and time, and the required amount is overwhelmingly large.
The current attacking force astonished the group of demons; some could evade, while others feared it was too late to escape.