Lu Xi, a female engineer at a locomotive factory who lost her husband during the decade of turmoil, and Feng Shaoheng, a young engineer, are working on the automation of lathes.
| Actor | Role |
|---|---|
 Sun Yanjun冯少衡 | 冯少衡 |
 Li Xiaoli尹文秀 | 尹文秀 |
 Yu Qian吴嫂 | 吴嫂 |
 Yin FuwenNot listed | Not listed |
 Wang Runshen冯德昌 | 冯德昌 |