Comparing Mescaline Sodium Enteric-coated Tablets vs Morte-mescaline in the Treatment of Adult Lupus Nephritis

Inclusion Criteria: * 1\. Age 18-70 years; 2. Meet the 2019 SLE classification criteria established by EULAR/ACR; 3. Have any of the following clinical and laboratory abnormalities: 1) proteinuria \>0.5 g/24h, or urine protein ++++ on random urinalysis, or urine protein/creatinine ratio EE \>500 mg/g (50 mg/mmol); 2) cellular tubularity including erythrocyte tubularity, hemoglobin tubularity, granular tubularity, tubular tubularity, or mixed tubularity; 3) active urinary sediment (except 3) active urine sediment (except urinary tract infection, urine leukocytes \>5/HPF, urine red blood cells \>5/HPF), or erythrocyte tubular, or leukocyte tubular; 4. 24h urine protein quantification ≥ 1.0 g; 5. Require long-term treatment with MPA-type drugs (mescaline sodium enteric-coated tablets or morte-mescaline); 6. Singed the informed consent. Exclusion Criteria: * 1\. Patients treated with immunosuppressive agents (e.g. CTX, MPA, CNI, etc.) within 30 days 2. Patients with co-morbid severe CNS infections 3. Neutrophil counts \<1×103/µl; 4. Glomerular filtration rate (eGFR) \<30 mL/min/1.73 m2 ; 5. Glutamic aminotransferase (ALT), glutamic oxalacetic aminotransferase (AST) or total bilirubin \> 1.5 x upper limit of normal (ULN); 6. Pregnant or lactating women 7. Presence of other major diseases such as tumors, HIV viral infections, systemic bacterial/fungal/viral infections; 8. Presence of contraindications to glucocorticoids and investigational drugs 9. Any condition that, in the judgment of the investigator, is unstable or may jeopardize the safety of the subject and his or her compliance with the study.