FILE PHOTO: Travellers wait to board their plane at Chengdu Shuangliu International Airport amid a wave of the coronavirus disease (COVID-19) infections, in Chengdu, Sichuan province, China December 30, 2022. REUTERS/Tingshu Wang
FILE PHOTO: Travellers wait to board their plane at Chengdu Shuangliu International Airport amid a wave of the coronavirus disease (COVID-19) infections, in Chengdu, Sichuan province, China December 30, 2022. REUTERS/Tingshu Wang