This is a science fiction novel. The story revolves around Lin Suisui, integrating history, science, family secrets and other elements. The plot is complex, full of suspense and reversals. The story starts from Xiamen in 1983. Through Lin Suisui's experience in the morning tea surprise, it leads to a series of secrets about family and history. As the plot develops, she continues to uncover the entanglement between her grandfather, father and enemy agents, as well as the shocking conspiracy hidden behind it. The novel involves multiple scenes, such as the Overseas Chinese Hotel, the cannery, the Overseas Chinese Approval Bureau, etc. Each scene is closely connected with the core secret of the story. At the same time, through switching between different time and space and recalling flashbacks, it shows the grand historical span from 1945 to the future, and explores profound themes such as science, ethics, and civilization.