Multiple Advanced Tumors After PD-1 Therapy Failure

The goal of this clinical trial is to learn if the combination of radiofrequency ablation (RFA) and Ivonescimab (PD-1/VEGF Bispecific Antibody) works to could reverse PD-1/PD-L1 resistance in patients with advanced tumors. It will also learn about the safety of this combination. The main questions it aims to answer are: Does the combination of RFA and Ivonescimab increase the objective response rate (ORR) of participants? What medical problems do participants have when taking the combination? Will the combination influence the progression-free survival time (PFS) and overall survival time and quality of life (QoL) of participants? Participants will: Patients received RGA treatment for less than three lesions. Patients were treated with Ivonescimab (20mg/kg Q3W, every 3 weeks) within 1 week before and after radiofrequency treatment until disease progression or intolerable toxicity occurred, or Ivonescimab was used for 2 years. Treatment effects will be evaluated every 9 weeks for 1 year and every 12 weeks thereafter.