RecruitingPhase 3ProcedureSublobar Resection for Adenocarcinoma in Situ/Minimally Invasive Adenocarcinoma Diagnosed by Intraoperative Frozen Section (ECTOP-1019)This is a clinical trial from Eastern Cooperative Thoracic Oncology Project (ECTOP), numbered as ECTOP-1019. The goal of this clinical trial is to confirm the therapeutic effect of sublobar resection for AIS/MIA diagnosed by intraoperative frozen section.