His first match was in the afternoon bracket.

  The opponent was a cultivator from Iron Mountain Hall: broad, solid, radiating the specific confidence of a man whose technique involved hitting things very hard and whose experience suggested this approach reliably worked.

  His name, according to the tournament register, was Gao Shan.

  His technique was called Granite Immortal Body — a defensive method that hardened the skin and musculature to a density that, Chen Xi estimated from the Qi signature, approached actual stone.

  Gao Shan bowed. Chen Xi bowed. The arena's containment formation pulsed once — the starting signal.

  Gao Shan assumed a stance.

  His skin took on a grey sheen as the Granite Immortal Body activated, Qi flooding his dermis and subdermis in a pattern that was, Chen Xi noted with professional interest, genuinely well-engineered.

  The energy formed a lattice structure — interlocking hexagonal cells, similar to a honeycomb, each cell reinforcing its neighbours.

  Elegant. Robust.

  The kind of technique that had been refined over centuries by people who understood structural engineering intuitively if not mathematically.

  It had one flaw.

  Every lattice has a resonance frequency. The hexagonal cells, by their regularity, all vibrated at the same base frequency.

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  Hit any crystalline structure at its resonance frequency, and the reinforcement that made it strong became the mechanism of its destruction — each cell amplifying the vibration to its neighbours, the structure's own geometry converting a small input into a catastrophic cascade.

  Chen Xi had identified the frequency in the four seconds since the containment formation pulsed.

  He extended his right hand, shaped the Qi in his vortex into a single concentrated pulse — no visual effect, no glow, no drama, just a precisely calibrated wave at 4.7 hertz — and flicked his wrist.

  The pulse crossed the arena floor. Gao Shan's Granite Immortal Body received it.

  For one second, nothing happened. Gao Shan grinned — the attack had apparently been a light breeze against his fortress.

  Then the resonance propagated.

  It started at the impact point — a small section of his left forearm — and spread outward at the speed of Qi transmission through his lattice, which was very fast.

  Each hexagonal cell caught the vibration, amplified it, passed it to the next.

  The grey sheen on Gao Shan's skin began to flicker. He looked down. His eyes widened.

  The Granite Immortal Body shattered.

  Not from the outside in, like a wall being demolished. From the inside out, like a wine glass singing itself apart.

  The lattice disintegrated in a wave that swept from forearm to torso to legs in approximately 1.3 seconds, leaving Gao Shan standing in the arena wearing nothing but his own skin and an expression of total incomprehension.

  Chen Xi was inside his guard before the incomprehension resolved into alarm.

  A palm strike to the sternum — measured, controlled, approximately thirty-seven percent of the force he could generate, enough to disrupt Qi circulation without causing injury — and Gao Shan sat down heavily.

  Elapsed time: nine seconds.

  The crowd was silent. Not the awed silence that had followed the Hundred Petal Cascade — that had been the silence of spectacle appreciated.

  This was the silence of an audience that did not understand what it had just seen.

  From the spectator section, Little Abacus's voice carried clearly across the quiet: "Did anyone else see that? Did ANYONE ELSE SEE THAT?"

  No one had.

  That was rather the point.