After the sudden death of female mechanical engineer Yu Wanqing in 2023, she traveled back to 1975 and became a "squeamish" female educated youth in the Northeast Construction Corps. With her excellent technical strength, she started by repairing a tractor and found a way to serve the country with technology in the double cracks of planned economy and gender bias. She eventually became a leader in China's agricultural mechanization after the reform and opening up.
