Illegitimate daughter is a Hidden boss

Chapter Five

The silence in the classroom was heavy, suffocating. Every student held their breath, their eyes glued to Xinyi as she glided toward the front of the room.

Lin Chenyi stood in the middle of the class, her hands clasped tightly against her chest, feigning a look of fragile concern while her eyes gleamed with sadistic anticipation. She couldn't wait to see Xinyi stammer, fail, and be dragged into the hallway in disgrace.

Xinyi reached the podium. She didn't look at Teacher Wang, nor did she glance at the complex, multi-chain derivative synthesis equation that occupied half the blackboard. Her expression was a mask of icy indifference, the posture of someone who had faced down global security systems and come out the other side without a scratch.

She picked up the chalk. It felt light, almost fragile in her fingers.

Without a second of hesitation, Xinyi began to write.

The sound of the chalk hitting the blackboard was rhythmic, steady, and terrifyingly fast.

While the rest of the class had struggled to follow Teacher Wang’s stumbling explanation of the molecular bonds, Xinyi’s hand moved with the fluid, calculated precision of a machine.

She didn't just solve the equation. She broke it down, identified the catalytic flaws in the original premise, and reconstructed the synthesis using an advanced, non-standard methodology that wouldn't even appear in their textbooks for another two years.

The room, which had been buzzing with whispers only moments ago, descended into an eerie, deathly quiet.

Teacher Wang, who had been standing with her arms crossed, her face set in a sneer, felt her smug confidence drain away.

Her eyes widened, tracking the complex, beautiful web of chemical symbols blooming across the board. She was a master of chemistry, yet the sheer speed and logic of Xinyi’s work were beginning to baffle her.

Xinyi didn't stop. She moved to the secondary chain, applying a cross-reactive catalyst that ignored the thermal limitations Teacher Wang had insisted were absolute.

With a final, sharp movement, she set the chalk down on the podium.

The entire board was filled with a masterpiece of scientific logic. It was cleaner, more elegant, and significantly more efficient than the theoretical model Teacher Wang had provided.

Xinyi turned around, her gaze cool and piercing as it landed on the stunned teacher. "The thermal limitations you mentioned were a result of an improperly stabilized reactant," she said, her voice smooth, low, and perfectly level. "If you adjust the polarity of the secondary catalyst, the reaction stabilizes at room temperature. It’s a standard application."

"A... a standard application?" Teacher Wang stammered, her face turning from a triumphant red to a sickly, pale white. She walked toward the board, peering at the synthesis chain. Every step of the logic was flawless. It was brilliant.

Lin Chenyi’s jaw dropped. The smug, performative mask she had worn for the entire school year shattered into a thousand pieces.

Her knuckles turned white as she gripped the edge of her desk.

How? How could that illegitimate trash know this?

The whispers in the room had shifted, changing from mockery to shock.

"Did she... did she just fix the equation?"

"That's not even in the curriculum! Where did she learn that?"

"Look at Teacher Wang’s face. She’s speechless."

Teacher Wang looked back at Xinyi, her hands trembling slightly. Her ego was severely bruised, but the cold, hard logic on the board left her with no room to lash out. To attack Xinyi now would be to admit her own academic inadequacy.

"You... you may sit down," Teacher Wang muttered, her voice tight, barely audible.

Xinyi didn't respond with a smile or a sign of relief.

She simply tucked the chalk back into its holder, adjusted the collar of her blazer, and walked back toward the rear of the classroom.

As she passed Lin Chenyi, Xinyi stopped for a fraction of a second. She didn't look at her foster sister, but her voice drifted out, cold and sharp as a blade. "Don't ever pretend to be my caring sister again, Chenyi. It’s pathetic."

Chenyi trembled, her face burning with a mix of fury and humiliated silence.

Xinyi returned to her seat, ignoring the stares of the entire class. She pulled her chemistry textbook toward her, tapped a few keys on her phone under the desk, and began to review a complex, encrypted coding project she was running for the Gu Empire’s dark-web scouts.

The cold beauty of the class was no longer just an untouchable iceberg. She was now seen in a different view.

Lu Shen watched her from his seat, his heart racing. He had always known there was something different about Xinyi, something deeper and more intense than anyone else could perceive.

Seeing her dismantle Teacher Wang’s lesson without breaking a sweat, he felt a spark of pride and a terrifying, growing obsession.

She isn't just a student,he realized, his gaze lingering on her profile as she focused on her phone. She’s a queen.

But Xinyi was already focused on her next objective. The message from Fat Jun regarding the secret DNA search was still burning in her mind. If someone was hunting for the truth of her lineage, she would have to be ready when they found her. And if they expected to find a helpless, illegitimate girl, they were about to be very, very wrong.