Study to Investigate the Efficacy and Safety of WX-0593 in ALK Positive Non-Small Cell Lung Cancer (NSCLC) Patients

Key Inclusion Criteria: * ≥18 years * Female or male * Patient has an Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2 * Life expectancy of at least 12 weeks * At least one measurable lesion * Histologically or cytologically confirmed diagnosis of advanced or recurrent or metastatic NSCLC that is ALK-positive by grade A tertiary hospitals, and subjects should have disease progression (RECIST 1.1) or intolerance (stopping criteria according to drug insert) after 1 or 2 marketed ALK inhibitors, the patients had disease progression after ALK inhibitor should continuously have drug at least 12 weeks , and less than 3 chemotherapy regimens previously * No brain metastasis, or asymptomatic brain metastasis, or symptomatic brain metastasis but stable for more than 4 weeks after treatment, and have stopped systemic hormone treatment (prednisone of \> 10 mg/day or equivalent hormone) for more than 2 weeks Key Exclusion Criteria: * Crizotinib is the only ALK inhibitor subjects received;unmarketed ALK inhibitor received; Lorlatinib or Brigatinib received; active ingredient or generic drug of ALK inhibitors received * HBsAg-positive and/or HBcAb positive and HBV DNA \> 1000 copies/mL, or HCV antibody-positive, or known HIV infected