Zhang Yu said evenly, "Guo Xuanzun is right. Celestial Xia is a land governed by order and law. Mere speculation will not do."
Daoist Guo's frost-white brows twitched as he looked at him. "Oh? Then Guardian of Rectitude has conclusive proof in hand? This old Daoist would like to hear it."
Zhang Yu said, "The concealment technique employed by that mighty cultivator was indeed formidable. The aura of his magical power dispersed on its own at the time, leaving not the slightest trace afterward.
"However, when that mighty cultivator attempted to assassinate Yan Ziquan, I exchanged a move with him. Though I was unable to seize the aura he had hidden away, I did discover something. The shadow he manifested was actually anchored to a magical artifact.
"Upon returning, I investigated such artifacts. They have an ancient name: Poolside Lament. It was a substitute artifact from the era of Ancient Xia. Those still capable of refining such an artifact today are, for the most part, Daoists of long cultivation."
Daoist Guo shook his head. "If Guardian of Rectitude insists on identifying this old Daoist, I fear that alone does not carry enough weight."
Zhang Yu nodded. "Naturally. Yet whenever one refines a magical artifact, all manner of precious materials must be used. Certain special items in particular are not so easily found. If one puts in the effort to investigate, one will eventually uncover something."
Daoist Guo's expression remained unchanged. "Then Guardian of Rectitude may investigate as he pleases. Guo prides himself on upright conduct and a clear conscience. Should Guardian of Rectitude uncover anything, you may come here and seize me at any time!"
Zhang Yu said, "I have read Guo Xuanzun's records. You have cultivated for more than a thousand years, have you not?"
Daoist Guo replied, "To