The 1970s: My Sweet Wife on the Island and Her Three Adored Treasures

[Military marriage + island life + devoted couple + adorable kids + face-slapping, with cozy everyday child-rearing. None of the three children are biological! This is explained, and the male and female leads aren't taking on someone else's children. A genius little girl adored by everyone, and a big brother who dotes on his little sister. The leads are devoted to each other in both body and heart.]

Lin Mian, a plant-based ability user, transmigrates to Blue Star with the little girl she rescued and assumes the identities of a mother and daughter who were murdered.

After enduring countless hardships to make it home, she is greeted not by tearful embraces from her family, but by a blindly loyal father, a timid mother, grandparents who favor boys over girls, and a wicked in-law family.

Lin Mian decisively remarries the soldier who brought her home, taking her daughter with her. Both have been married before, so neither judges the other, and they even get to skip having a baby.

Her husband is stationed on an island, and Lin Mian joins him there. She doesn't have to deal with a swarm of relatives or scheming in-law relationships, and can sleep in every day.

No one thinks Lin Mian's second marriage will work out. They mock her for being unable to bear a son and marrying a man with two sons, saying that once her daughter marries, she'll have to rely on her adopted sons to support her in old age. But no one knows Lin Mian's secret: her daughter is a super-high-IQ genius.