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The implementation of two-child policy has changed the mode of obstetrics and has presented great challenges. With hierarchical management of high-risk patients and control of the cesarean section rate, we can ensure the safety of pregnant women and newborns. The implementation of two-child policy has changed the mode of obstetrics and has presented great challenges. With hierarchical management of high-risk patients and control of the cesarean section rate, we can ensure the safety of pregnant women and newborns.COVID-19 suddenly stru