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.
Sun Yanjun
as 冯少衡
Li Xiaoli
as 尹文秀
Yu Qian
as 吴嫂
Yin Fuwen
as
Wang Runshen
as 冯德昌
