Ten years of polishing with zero defects, his year-end bonus was only 880 yuan. On the day he resigned, his boss taunted, "Who do you think you are outside of this factory?" Just three days later, a ten-billion-yuan aviation order collapsed. Without him, no one in the workshop could meet precision standards. He turned 'polishing worker' into a national standard. The day he was underestimated was the true beginning of his rise.