This study aims to explore time-of-day of administration of immunochemotherapy on the efficacy for treatment naive advanced non-small cell lung cancer.

All the advanced NSCLC patients who were treated with chemotherapy plus pembrolizumab or sitilimab will be randomized to two groups. One for morning group, the patients in this group were treated with chemotherapy plus pembrolizumab or sintilimab before 15:00. One for afternoon group, the patients in this group were treated with chemotherapy plus pembrolizumab or sintilimab after 15:00.

Inclusion Criteria:

1. Understand the requirements and contents of the clinical trial, and provide a signed and dated informed consent form.
2. Age ≥ 18 years.
3. Histopathology or cytology confirmed and recorded local progression or metastatic non-small cell lung cancer without systemic treatment.
4. EGFR, ALK and ROS1 mutations negative confirmed by an accredited local laboratory.
5. ECOG 0-1.
6. Predicted survival ≥ 12 weeks.
7. Adequate bone marrow hematopoiesis and organ function
8. Presence of measurable lesions according to RECIST 1.1.
9. Subjects with stable brain metastases may be included in the study.

Exclusion Criteria:

1. Prior systemic therapy for locally advanced or metastatic disease.

2. Subjects who have received any of the following treatments must be excluded:

   • Ant Treatment with chemotherapy or molecules such as EGFR, VEGFR antibodies within 4 weeks prior to the first dose of study drug.
   • Have received radiation within 14 days prior to the first dose or have not recovered from radiation-related toxicity. Chest and extra-brain palliative radiotherapy, stereotactic radiosurgery, and stereotactic body radiotherapy may be performed 7 days prior to the first dose.

3. Presence of spinal cord compression or meningeal metastasis.

4. History of other malignant tumors within 2 years.

5. Adverse events (except alopecia of any degree) of CTCAE > grade 1 due to prior treatment (e.g., adjuvant chemotherapy, radiotherapy, etc.) prior to the first dose.

6. History of stroke or intracranial hemorrhage within 6 months prior to the first dose.

7. The presence of any severe or poorly controlled systemic disease, including poorly controlled hypertension and active bleeding in the judgment of the investigator.

8. Subjects with persistent or active infection, including but not limited to hepatitis B (HBV), hepatitis C (HCV), human immunodeficiency virus (HIV) and COVID-19 infection.

9. Heart-related diseases or abnormalities

10. Past history of interstitial lung disease, drug-induced interstitial lung disease, radiation pneumonitis requiring steroid therapy or interstitial lung disease with active clinical symptoms, immune pneumonia caused by immunotherapy.

11. Refractory nausea and vomiting, chronic gastrointestinal disease, difficulty swallowing drugs, or inability to adequately absorb sunvozertinib or anlotinib due to previous bowel resection.

12. Live vaccine was given 2 weeks before the first medication.

13. Women who are breastfeeding or pregnant.

14. Hypersensitivity to the test drug and the ingredients.

15. Other conditions assessed by the investigator to be unsuitable for participation in the study.