Transmigrated into a Beloved Child of the Seventies

[Irregular updates] Zhong Jiatian transmigrated. Her father is a doting dad who loves his daughter more than life itself, her mother is the most capable woman in the village, and her older sister is a little tough girl with a serious sister complex. Huh? Is her twin brother a fellow transmigrator? And he comes first in every exam? Does that mean she can just lie back and enjoy the good life by following him around?! Brother: Don't get your hopes up. You still have to study. Dad, Mom, and Sister: Our darling is so smart, so she should work even harder at her studies! Zhong Jiatian: Fine. Even a lazy fish needs a dream. I'll work hard and get into college! The happy everyday life of a family, full of little domestic moments~ [An alternate-history era~] Theme: Strive tirelessly and work hard for a life of plenty