Harry took a deep breath.
He felt as though he were back in that pressure-filled Training Room, with Moody's questions hurtling toward him like training dummies.
He forced himself not to think about Ron and Hermione in the distance, not to listen to the laughter and chatter, and focused every thought on the Auror's way of thinking Moody had taught him.
"I think this shield system has three layers of logic, and four weaknesses we can attack."
Harry's voice was quiet but clear, and everyone immediately fell silent.
A flicker of approval crossed Moody's normal eye.
"Go on."
"The first is its public-relations smokescreen-the spectacle you mentioned, those ridiculous prank counterattacks."
Harry began drawing on all his observations and thoughts, Professor Douglas's and Sirius's ways of thinking converging in his mind.
"The purpose of this layer is to deal with most probing attacks at a very low magical cost, while providing entertainment to lull the real enemy into complacency."
"The weakness?"
Moody pressed hoarsely, his tone urgent.
"Magical expenditure."
Harry answered quickly.
"Although each counterattack costs very little, if a well-trained team launched continuous harassment attacks from different angles, prioritizing frequency rather than power,
they could theoretically exhaust this layer's entertainment budget and force it to activate its real defensive mode."
"Interesting." Moody's lips curled into a fierce grin. "Keep going."
"The second layer is its core defensive logic-the system it just used against Warrington."
Harry recalled the ideas Sirius occasionally spoke about.
"Its core is absorption and conversion.
I noticed that after Warrington's spell energy was absorbed, it flowed along specific rune patterns on the shield's surface instead of dispersing evenly.
That means its energy transmission follows fixed paths."
"So?"
"So the second weakness is those energy transmission hubs."
Confidence entered Harry's voice.
"If we used sustained, precise spells