Mingzhao put down the scrapped material and finally looked up at the furious Wang Dachui.

His eyes were calm and unwavering, clearly reflecting the other person's face, which was contorted with anger.

“It’s not a machine tool problem, nor a material problem,” her voice was not loud, but it strangely pierced through the roar of the workshop and clearly reached everyone’s ears, carrying an undeniable certainty.

"It was caused by an incorrect processing strategy and improper control of thermal stress."

She walked to the massive control panel, her fingers rapidly tapping across the cold metal buttons and dials, recalling the previously recorded machining parameters. Her gaze swept over the numbers like a scanner.

"The spindle speed was 15 percent too high, which aggravated tool chatter and caused irregular vibration marks at the microscopic level. The feed rate was set improperly, which created a stress concentration point in the blade root transition area. The coolant spray angle deviated from the optimal value by 3 degrees, which failed to effectively remove cutting heat, resulting in local material phase deterioration and decreased hardness."

She spoke slowly but incisively, “Also, the back angle of the blade was too large, and the edge dulled faster than expected, which exacerbated the surface tearing.”

With each word she uttered, Wang Dachui and his apprentices' expressions grew increasingly grim.

These are the pain points they encountered in actual operation, but they haven't yet figured out how to solve them. Yet, a young girl who looks like she's never even touched a machine tool pointed them out so accurately, even down to the numerical values.

This shocked them and made them feel a strong sense of humiliation.

"You... what do you know!" Wang Dachui was so angry that Hu Zi was trembling, and the finger pointing at Ming Zhao was also trembling slightly due to his excitement.

"All talk and no action! You make it sound so easy! You try it yourself!!"

He scoffed, "You try and get the precision down to 0.1 micrometers! You're just talking without any real experience!"