This is a Phase II clinical study conducted in China to evaluate the treatment of advanced non-small cell lung cancer with JSKN016. The enrolled subjects are all in the locally advanced or metastatic stage of non-small cell lung cancer.The study is divided into two parts. The main objective of part I is to assess the efficacy and safety of JSKN016 in selected subjects with advanced non-small cell lung cancer. The main objective of part II is to compare the efficacy of JSKN016 and docetaxel in subjects with advanced non-small cell lung cancer.