A Shenzhen Airlines staff member helps a passenger finish a self-service luggage check-in at Shenzhen International Airport in Bao’an District on Thursday. About 700 passengers used the new self-service luggage consignment service Thursday. The entire process takes about 1 minute, which significantly reduces the check-in time for air passengers. The average daily number of flights operated by Shenzhen Airlines is now more than 600, equivalent to about 90 percent of the number of flights recorded before the COVID-19 epidemic.         Chen Ximing