The crisp morning air carried the scent of damp earth and pine as Feiyin stood before his father in the training yard. The sky, tinged with the soft gold of dawn, stretched vast above them, mirroring the vastness of knowledge Feiyin had yet to grasp.


    Cai Feng, his arms crossed over his chest, regarded his son with his usual calm intensity.


    “Today, we move past refining internal strength,” he said. “You’ve begun to understand the natural oscillations of the elements, but understanding alone isn’t enough.” His gaze sharpened. “Now, you will learn to apply it.”


    Feiyin’s fingers twitched in anticipation.


    His father picked up a single dried leaf, holding it between his fingers before letting it fall. It fluttered, light as a feather, before settling onto the training platform.


    “Shatter it,” Cai Feng said simply.


    Feiyin blinked.


    ‘Shatter a leaf? That’s…’


    He looked up at his father, who remained expressionless.


    “…How?”


    Cai Feng stepped forward, standing next to him. “Your internal strength is like a bowstring. When pulled taut, it is at its peak tension. But if released too early, it will lose its force. If unfocused, it will scatter. And if applied incorrectly, it will be wasted.”


    He crouched down, his fingers brushing over the leaf.


    “To break something as fragile as this, you must not strike it with raw power. Instead, you must release an explosive pulse of force, all at once, at the very moment of contact.”


    Cai Feng straightened. “Watch.”


    His body did not move. He did not breathe deeply, nor did his stance shift.


    Then, the leaf simply disintegrated.


    Feiyin barely saw it happen. A minuscule tremor in the air—a pulse of energy so compact, so perfectly controlled that the dry structure of the leaf had no choice but to collapse under its force.


    Feiyin stared, his heart pounding. ‘This… this is possible?’


    His father turned to him. “Now, you try.”


    Feiyin hesitated before stepping forward. He took a deep breath, focusing his internal strength as he gathered it beneath his skin.


    Firm. Controlled. Explosive.


    He crouched, mirroring his father’s motion, and with a swift pulse of internal strength—


    The leaf… fluttered slightly.


    It did not break.


    Cai Feng said nothing.


    Feiyin frowned, trying again. He tensed his entire body, sending his internal strength forward. This time, the leaf quivered, but still, it did not shatter.


    Frustration bubbled in his chest.


    “…I don’t get it,” he admitted, exhaling. “I’m focusing all my strength on it, but nothing happens.”


    His father nodded. “That’s your problem.”


    Feiyin blinked.


    “You are focusing on strength,” Cai Feng clarified. “But strength alone doesn’t shatter—precision does.”


    He gestured toward the leaf.


    “Do not think of destroying it with force. Instead, think of creating a perfect resonance within it—a tremor that shakes its very structure apart.”


    Feiyin clenched his fists. That made sense, but—


    How do I do that?


    He closed his eyes, drawing in a slow breath.


    Then, he listened.


    The leaf was fragile. Its oscillation was delicate, barely present. To break it, he had to match that oscillation, amplify it, and then let his internal strength strike at the precise moment when the structure could no longer hold itself together.


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    His eyes snapped open.


    With one last controlled breath, he pressed his fingers against the leaf—


    Snap.


    It didn’t disintegrate like his father’s, but a clean split ran through its center.


    Feiyin exhaled, his chest tight with excitement.


    Cai Feng smirked. “You’re beginning to understand.”


    ----


    That afternoon, Feiyin sat across from his mother near the riverbank, the flowing water glistening under the setting sun.


    Mei Liao held a smooth, thin piece of wood in her hand, her fingers gently tracing its grain.


    “You learned about explosiveness this morning,” she said, her voice light as the breeze. “But what happens when the world does not allow you to break something by force?”


    She placed the wood flat on the ground before them.


    “This piece is thin, but firm. If you strike it without enough strength, it will not break.”


    Feiyin nodded, already seeing the test before him.


    “…Then I just use more strength?” he guessed.


    His mother chuckled, shaking her head. “No, my dear. If you force your way through, you will only meet resistance. Instead, you must learn to flow past that resistance.”


    She picked up the wood and tapped it gently with her fingertip. The piece did not move.


    Then, without any visible force, a crack appeared along the inside of the wood.


    Feiyin’s eyes widened.


    “You didn’t even hit it hard…”


    Mei Liao smiled. “I didn’t need to.”


    She tapped his forehead lightly. “This is where you’ve been thinking too much about external force. What if, instead of breaking something from the outside, you send your strength inside?”


    Feiyin stared at the cracked wood, realization dawning.


    “…Softness.”


    Mei Liao nodded. “You cannot always rely on hardness. If something refuses to break, find the spaces where strength can slip through.”


    She picked up a small river stone, polished smooth by years of water running over it.


    “Try sending your strength through this.”


    Feiyin took the stone in his palm. It was dense, unyielding. His instinct was to try to crush it—to send power forward as he had done with the leaf.


    But he paused.


    Instead of forcing his strength, he let it sink into his hand. He felt the stone’s subtle oscillations, its inner resonance.


    Then, he sent his internal strength inside it, spreading it gently instead of striking all at once.


    At first, nothing happened. Then—


    A faint crack ran along the surface.


    Not shattered, not destroyed. But penetrated.


    Mei Liao beamed. “Very good.”


    Feiyin’s heart pounded. This was different from his father’s explosive force. This was like slipping between the spaces of the world itself.


    Softness wasn’t weakness. It was another kind of power.


    ----


    As the sun dipped below the mountains, Feiyin sat quietly between his parents, his thoughts racing.


    Cai Feng had taught him how to erupt his strength outward, while Mei Liao had shown him how to send it inward.


    Two sides of the same coin. Firmness and softness. Direct and hidden. Yang and Yin.


    He looked down at his hands.


    ‘…If I can master both, what else will I be able to do?’


    His mother ruffled his hair. “You’re thinking too much again.”


    His father chuckled. “Let him think. That’s how he grows.”


    Feiyin grinned, stretching his fingers.


    Tomorrow, he would try again. And again. Until he perfected it.