Decision making need assessment Inclusion criteria of patients: 1) Age ≥ 18; 2) patients with primary lung adenocarcinoma diagnosed by intraoperative frozen pathological section; 3) have not made or have made a decision on lung cancer molecular testing (no matter choose to do molecular testing or not); 4) voluntarily participate in this study.  Exclusion criteria of patients: 1) Inability to understand the research content.  Inclusion criteria of other stakeholders: 1) Age ≥ 18 years old; 2) Relevant working years ≥ 2 years; 3) For thoracic surgeons, personnel of molecular testing companies: have previous experience in communicating with patients about molecular testing related to lung cancer targeted therapy; For nurses, hospital administrators and personnel of insurance companies: have a certain understanding of decision-making process; 4) voluntarily join this study.  Exclusion criteria of other stakeholders: 1) Inability to understand the research content.  Cognitive debriefing/alpha tests Inclusion criteria of patients or his authorized clients: 1) Age ≥ 18 years old; 2) patients with primary lung adenocarcinoma diagnosed by intraoperative frozen pathological section; 3) have made a decision on lung cancer molecular testing (no matter choose to do molecular testing or not); 4) voluntarily participate in this study.  Exclusion criteria of patients: 1) Inability to understand the research content.  Inclusion criteria of other stakeholders: 1) Age ≥ 18 years old; 2) Relevant working years ≥ 2 years; 3) For thoracic surgeons, personnel of molecular testing companies: have previous experience in communicating with patients about molecular testing related to lung cancer targeted therapy; For nurses, hospital administrators and personnel of insurance companies: have a certain understanding of decision-making process; 4) voluntarily join this study.  Exclusion criteria of other stakeholders: 1) Inability to understand the research content.  Field testing /β tests:  Inclusion criteria of patients and their authorized clients: 1) Age ≥ 18 years old; 2) patients with primary lung adenocarcinoma diagnosed by intraoperative frozen pathological section; 3) have not made decision on lung cancer molecular testing; 4) voluntarily participate in this study.  Exclusion criteria of patients: 1) Inability to understand the research content.  Inclusion criteria of physicians: 1) Age ≥ 18 years old; 2) Relevant working years ≥ 2 years; 3) Have previous experience in communicating with patients about molecular testing related to lung cancer targeted therapy; 4) voluntarily join this study.  Exclusion criteria of other stakeholders: 1) Inability to understand the research content.