The Mu Feng was indeed a Divinity Transformation Treasure. As soon as Tie Dan stepped into the temple, the Artifact Spirit sensed him immediately. The phoenix eyes radiated Divine Light, dazzling like a torch, focusing straight on him like a searchlight.
Fortunately, Tie Dan had long been prepared, specifically tuning against the Divine Light, adjusting the Formless Ball to colorless and formless to counteract the Divine Light's investigation. He only needed to ensure he wasn't directly hit by the light beam or too close, and naturally, Mu Feng couldn't discover anything.