RecruitingPhase 3Drug trialRibociclib in Hormone Receptor-positive, HER2-negative Early Breast Cancer With Residual Disease After Neoadjuvant ChemotherapyThis is a multi-center, open-lable, prospective, randomized phase III clinical trial to investigate the efficacy and safety of adjuvant ribociclib combined with aromatase inhibitor in hormone receptor-positive, HER2-negative early breast cancer with residual disease after neoadjuvant chemotherapy