Zhao Jianjun, an eighth-grade bench worker with twenty-six years of experience, encountered a crisis at the Hongxing Machinery Factory. To save costs, Deputy Director Sun Guoqiang skipped testing and used problematic bearings in batches. Seven reducers were damaged one after another, Zhao Jianjun was forced to take the blame and sign a liability form, and he angrily tore up the documents and resigned in fury. The breakdowns in the factory continued to worsen, twenty-seven machines were scrapped successively, and an order of three million was in jeopardy. The desperate Hongxing Factory had no choice but to come and ask for help. Zhao Jianjun put aside personal grudges and returned to put out the fire, using technology to restore the truth of the accident and clear his grievance. He refused a high-paying re-appointment, teamed up with partners to set up a maintenance group, adhered to the technological bottom line, passed on knowledge to apprentices, and interpreted the backbone of an artisan.