In 1960, Chang Hanqing, a young technician who had just returned from studying abroad, met Jin Canlan, a female combat hero who was transferred from the railway corps to the factory. They went from disliking each other to knowing each other and falling in love, overcoming interference from their families and the outside world, and finally got together. After marriage, they overcame various difficulties in life, studied technology, and spent their entire lives working together to develop and build electric locomotives in my country. As time passed, their children eventually chose the profession of locomotive construction and built world-class high-speed railways for my country.