The investigators hypothesize that paclitaxel combined with cisplatin in a weekly-based regimen as neoadjuvant chemotherapy is effective and tolerable for locally advanced breast cancer.

In patients with some sub-type advanced breast cancer, neo-adjuvant chemotherapy combined with endocrine therapy may improve the pathological remission rate.

Premenopausal patients with triple negative breast caner and hormonal receptor positve breast cancer patients will be randominzed to have neoadjuvant chemotherapy combined with endocrine therapy or not.

In this trial, patients with ER and or PR positive breast cancer will be separately randomized to have chemotherapy or chemotherapy combined with endocrine therapy according to their menstrual status. Letrozole for the postmenopausal women and ovarian function suppression for the premenopausal women. Patients with triple negative breast cancer will be randomized to have neoadjuvant chemotherapy combined with ovarian function suppression if she is premenopausal. Postermenopausal patients with triple negative breast caner will only have neoadjuvant chemotherapy.

Patients with Her2 overexpression can obtain anti-Her2 target therapy. This study has been amended to a 1:2 ratio to control and neoadjuvant chemotherapy combination of endocrine therapy.

Inclusion Criteria:

1. Women aged ≥18years and ≤70 years;
2. At least on measurable disease according to the Response Evaluation Criteria in Solid Tumors (RECIST). Histologically confirmed invasive breast cancer, tumor size ≥2 cm, T2-4 N0-3M0;
3. ER/PR/HER-2 and Ki-67 status detected on core biopsy. ER and/or PR positive was defined as >1% stained cells.HER2-positive is defined as immuno-histochemistry (IHC) 3+ or the ratio of HER2 gene signals to chromosome 17 signals >2.0 or HER2 gene copy >6.0.
4. No prior systemic or loco-regional treatment of breast cancer;
5. Adequate bone marrow function:WBC≥4.0×109/L, Absolute neutrophil count（ANC）≥1.5×109/L, Platelets（PLT）≥100×109/L, Hemoglobin（Hb）≥90g/L;aspartate aminotransferase(AST),Alanine aminotransferase (ALT)≤1.5 upper normal limit (UNL), creatinine≤1.5 UNL, bilirubin≤1.5UNL;
6. No obvious main organs dysfunction.

Exclusion Criteria:

1. Unwilling or unable to use an acceptable method of contraception in 8 weeks (including 8 weeks) after final dose of test drug;
2. Patient is pregnant or breast feeding;
3. Inflammatory breast cancer and metastatic breast cancer;
4. Any evidence of sense or motor nerve disorders;
5. Patients with medical conditions taht indicate intolerant to neoadjuvant therapy, including uncontrolled cardiovascular disease, severe infection;
6. Any concurrent malignancy other than breast cancer;
7. Know severe hypersensitivity to any drugs in this study.