School of Nursing Lanzhou University Lanzhou Gansu China;
School of Nursing Lanzhou University Lanzhou Gansu China;
School of Nursing Lanzhou University Lanzhou Gansu ChinaDepartment of Liver Diseases Branch;
School of Nursing Lanzhou University Lanzhou Gansu ChinaDepartment of EICU;
School of Nursing Lanzhou University Lanzhou Gansu ChinaDepartment of Nursing Lanzhou University Second Hospital Lanzhou Gansu China;
Institute of Medical Psychology Basic Medical College Lanzhou University Lanzhou Gansu China;
COVID-19; frontline nurse; psychological experience; qualitative research;