RecruitingPhase 2Drug trialA Phase II Clinical Study to Evaluate HLX43 in Combination With Serplulimab in Subjects With Advanced Lung CancerThe study is to explore the the reasonable dosage and to evaluate the efficacy, safety and tolerability of HLX43 (Anti-PD-L1 ADC) in combination with Serplulimab (anti-PD-1 humanized monoclonal antibody injection) in patients with advanced lung cancer.