Inclusion Criteria:  Subjects clearly understand the purpose of the study, are willing and able to comply with the requirements to complete the study, and can sign the informed consent. Clinically suspicious of non-small cell lung cancer or tissue confirmed preoperatively Clinical stage T1-3/N0-1/M0 Preoperative ECOG performance status 0-1 Preoperative ASA class I-III Preoperative pulmonary function test FEV1 ≥ 60%, DLCO ≥ 60% Patients expected to achieve R0 (complete resection) via simple lobectomy and mediastinal lymph node dissection  Exclusion Criteria:  Patients who smoked within 2 weeks prior to operation Patients who received antitussives and expectorants 2 weeks prior to operation Patients who are pregnant or breast feeding Patients with severe or uncontrolled psychological disorders Patients with severe pulmonary adhesion Patients who are ineligible for minimally invasive surgery; thoracotomy conversion Patients diagnosed with other malignancies within 2 years prior to operation Patients who received chemotherapy or radiotherapy within 6 months prior to operation Patients suspicious of clinical N2 or received neoadjuvant therapy prior to operation Patients with cough-related diseases; COPD, asthma, ILD, GERD Patients suspicious of lymph node metastasis/invasion around vagus nerve during the preoperative clinical staging evaluation