Breast Mesh Used in Two-staged Breast Reconstruction

Inclusion Criteria: 1. Diagnosed with breast cancer 2. More than 18 years old 3. Karnofsky Performance Status (KPS) larger than 80 4. No clinical or imaging evidence of distant metastasis 5. BMI \< 35kg/m2 6. Patients with no or mild breast ptosis 7. No severe deficiency in hematological, cardiovascular system, no immune-deficiency, no severe abnormal liver or kidney function. 8. Mental Health Patient \- Exclusion Criteria: 1\. Patients with distant metastasis of breast cancer or local recurrence; 2. Past ipsilateral breast/chest wall radiation; 3. Inflammatory breast cancer, stage IV breast cancer 4. History of severe allergic or specific constitution; 5. Mental illness; 6. Drug/alcohol abuse; 7. Pregnancy, lactation, or impregnated during the trial period; 8. Non-eligible to the study enrollment based on researchers' discretion \-