Clinical Study of High-intensity Focused Ultrasound Tumor Treatment System(Super Knife) in the Treatment of Breast Cancer

All participants will be randomly divided into groups A and B. Participants in group A will receive a high-intensity focused ultrasound tumor treatment (Super Knife) once, and participants in group B will receive treatment twice (4 weeks, one cycle).. Breast cancer surgery was performed at 3 months ± 1 week after the Super Knife treatment.