Transmigrated to Matriarchal Realm, I Rule Turbulent Times by Fishing

Shen Yaoyao, a modern marine biologist, accidentally transmigrates into a matriarchal country into the body of a woman with the same name. In this nation, women hold all the rights, and men are mere dependents. Originally named Ling Yaoyao, a spoiled daughter of a fishing village chief, she was cast out upon learning she was actually from the poor Shen family and had been swapped with Shen Yue at birth. She squandered her savings marrying two brothers from the Su family, leaving her destitute. When the eldest brother was beaten to death for fishing illegally to support the family, she was left with only a sick younger brother. After transmigrating, Shen Yaoyao uses her expertise to master fishing, supports her husbands, reaches the pinnacle of success, and delivers a satisfying payback to the Ling family.

Synopsis from DramaGo.