Borin did not teach him.
"I cannot," Borin said. Not apologetically — as a clear operational fact. "I have no bloodline sensitivity. I carried the locket for seventeen years and received nothing from it but cold and then neutral. What you can do—" He paused. "I have seen it described. In the pre-founding records your father kept in the estate's archive. I have read the descriptions. I cannot perform what the descriptions describe."
"Then who taught the previous Wardens?"
"Each other. Generation to generation." Borin paused. "And the fragment itself, in some accounts. The pre-founding records describe the fragment as a — teaching instrument. Not passive. Not simply a connection to the Veil's structure. Something that could participate in the Warden's development. Guide it." He looked at Corvin carefully. "Your father's notes describe the fragment as considerably more active in training than in maintenance. As if it had a preference for the developmental period."
Corvin thought about the entity on the valley road and what had arrived in the moment after he had dispersed it. That. You did that. Now you know you can. Not instruction. Confirmation. The specific quality of something that had been watching and had chosen the moment to deliver the confirmation when the lesson was most legible.
"What did the pre-founding records describe as the first development stage?" he said.
Borin thought. "Control of the projection's scope," he said. "Learning to extend the resonance outward deliberately rather than instinctively, and then learning to extend it in a specific direction rather than in all directions equally. The instinctive version — what you used on the road — is unfocused. Expensive. A large output for an imprecise result." He paused. "The controlled version is expensive initially and becomes less so as precision increases."
Corvin thought about the shaking after the road. The honest physical account of a system used at maximum output with minimum control.
"Where?" he said.
Borin considered. "There is a space below the city," he said carefully. "Below the lower quarter specifically. A basement level that was part of the original construction — before the Silt and Stone was built, before most of what's here now was built. Stone floor, stone walls, the city's original foundation layer. Your father used it." He paused. "When he came to the city. For exactly this." He met Corvin's eyes. "I should tell you — it is not ordinary stone. It has a quality. Your father described it as — responsive. As stone that had been part of the Veil's construction process and that retained something of that function."
"How far down?"
"Two levels. There is a door behind the cold storage. I have the key."
The basement was exactly what Borin had described.
Stone floor — old, the specific grey of stone that had been laid before the methods changed, before the quarrying technique that the city's later buildings used. Stone walls. A ceiling low enough that Corvin could touch it by raising his arm. No windows. The single candle Borin had given him threw shadows that the room's corners absorbed completely.
He set the candle on the floor.
He pressed both palms flat against the wall and let the Echo-Sight open.
The stone said: deep. That was the first and most important quality — deep in the way the Aethermoor plateau's outcroppings had been deep, old in the specific way of stone that had been present for long enough that geological timescale was the only appropriate measure. But unlike the plateau, which had been simply ancient, this stone had a quality of — construction. The specific quality of material that had been worked, placed, arranged according to a logic. Not built the way a house was built. Worked the way a working was worked. Arranged with intention at a level below the physical arrangement.
The same quality as the locket.
Not as strong. Not as specific. The locket's quality was personal, precise, the condensed presence of something that had been specifically made for a specific purpose. This was the diffuse version — the same signature, spread across the floor and walls and ceiling of this room in the way that the memory of heat spread through stone long after the fire that produced it had been extinguished.
He stood in the room and let the Echo-Sight receive it fully.
It was — settling. The same word he had used for the geological substrate of the valley road, but different in kind. The valley road's patience was geological, indifferent, the patience of something that simply was. This was organized. The settling quality of a room that had been built to receive a specific kind of attention and that was, after years without it, receiving that attention again.
He pulled his hands from the wall.
He stood in the center of the room.
He extended the projection.
Not as he had on the road — not the sudden instinctive push of everything available outward in all directions simultaneously. He extended it the way Borin had described: deliberately, in a specific direction, with a specific scope. Not everything, all at once. A small portion. A controlled amount. Outward in one direction only — south, because the locket was still warm toward south and the directional quality of the basement's stone matched it, both oriented toward the same—
The stone received it.
He felt this immediately — the projection extending outward from his skin and being received by the room's stone the way a voice was received by a space that had good acoustics. Not absorbed. Received and returned. The specific quality of a material that was capable of engaging with the projection rather than simply being acted upon by it.
He extended further.
The return was clearer. The stone gave back a specific quality in the return — not an impression, not the Echo-Sight's ordinary historical reception, but something present, something that existed in the current frequency of the room rather than in its past. The specific quality of his projection, reflected back to him with a precision that his instinctive road-projection had not produced.
He could feel his own output.
He had not been able to feel his own output on the road. He had only felt the cost of it, the depletion, the shaking. Now he could feel the shape of what he was extending — the specific frequency, the particular quality of the resonance he was pushing outward — because the room's stone was giving it back to him with the precision of a mirror.
He spent the next two hours learning what he was.
Not fully — two hours was not enough to learn fully. But enough to understand the basic shape of it. The projection was not simply the Echo-Sight in reverse. It was its own capacity, with its own specific character, its own frequency signature that was distinct from the Echo-Sight's receptive quality. Outward where the Echo-Sight was inward. Active where the Echo-Sight was receptive. The same source, a different direction.
He could control the scope. He could control the direction. He could, with effort that decreased as the session progressed, control the intensity — extend less than full output, extend a specific measured amount rather than everything available.
At the end of the two hours the cost was real but it was not the shaking of the road.
It was the precise fatigue of a system that had been asked to do something new in a controlled way rather than an urgent one.
He sat on the stone floor with his back against the wall and the candle burning low and let the room's specific quality settle around him.
The locket was warm.
The room was quiet.
Somewhere above him the city was doing what it did.
He sat for a long time before going back up.