Inclusion Criteria:  Diagnosis of relapsed/refractory hematologic malignancies confirmed by the World Health Organization (WHO) criteria. Eastern Cooperative Oncology Group (ECOG) score ≤ 1. Life expectancy ≥ 3 months.  Exclusion Criteria:  Pregnant and lactating females. Proven hematologic malignancies of the central nervous system. Diagnosed acute promyelocytic leukemia (predominantly granulocytic promyelocytes in bone marrow, which are ≥ 30% in NEC). History of other malignant tumors within 5 years, except for cured skin basal cell carcinoma, skin squamous cell carcinoma or cervical carcinoma in situ.