I Transmigrated into a Book Set in the 1960S, and After a Forced Blind Date, I Found a Steady Job

[Period setting + military marriage + both leads' first time] Jiang Yao was a wealthy young woman in the modern era, but overnight she transmigrates to the 1960s, where food and clothing are scarce. Is the man she's about to meet for a matchmaking date a bad guy? Have both her younger cousins taken over other people's bodies? Does one want to set her up with her blind date, while the other plans to use her house in the county town to make a fortune on the black market? Is there more to her mother's background than meets the eye? Will the man she's dating eventually die on the battlefield? Just after she finds a job in the county town, she returns home to a scene straight out of a novel she read. No wonder the names of her two cousins and her blind date seemed so familiar. Her second cousin is the original heroine, reborn. Her third cousin is a transmigrated new heroine who outshines the second cousin, and the man is the hero they are both fighting over. And Jiang Yao, no matter who the heroine is in any version of the story, is always the hero's cannon-fodder ex-wife. Jiang Yao's heart turns ice-cold. She hugs her small frame, wanting no part in their love and hatred. Jiang Zhu has been reborn, returning to a time before everything began. Once her eldest cousin dies of a hemorrhage, she can become their stepmother and bask in the glory brought by her genius stepson. But why has everything gone so differently from what she expected? Her eldest cousin refuses the match arranged by her family and instead starts dating an officer destined to die in battle? She waits to see the day her eldest cousin's officer husband dies on the battlefield, leaving her a childless widow. But Jiang Zhu waits year after year. Why does her eldest cousin's officer husband keep rising through the ranks, while their family grows to include children of both sexes?