Twenty-eight years ago, there was a geological anomaly in the Jin-Jing-Tang area of our country. In order to strengthen earthquake monitoring, the National Seismological Bureau sent Zhou Haiguang to Tangshan to serve as the director of the Tangshan Earthquake Observatory. Zhou Haiguang is a young geologist trained in our country. He fully realized the great responsibility that came with his mission to Tangshan. At the Tangshan train station, Zhou Haiguang met Cui Jian, an official from the Earthquake Observatory who had come to pick him up. In the rush, Zhou Haiguang's nylon net bag caught on the hem of a woman's clothes. He quickly apologized, but the woman gave him a disdainful look. That woman was Wen Yan, a female military doctor at the Tangshan 255 Hospital. She had come to the train station to meet her sister Wen Xiu, who had just returned from a performance in Beijing...