Cathay Pacific employees work at Hong Kong International Airport, in Hong Kong, China March 8, 2023. REUTERS/Lam Yik 

A Cathay Pacific employee works at Hong Kong International Airport, in Hong Kong, China March 8, 2023. REUTERS/Lam Yik 

Cathay Pacific employees work at Hong Kong International Airport, in Hong Kong, China March 8, 2023. REUTERS/Lam Yik 

Cathay Pacific employees work at Hong Kong International Airport, in Hong Kong, China March 8, 2023. REUTERS/Lam Yik 

Travellers are seen at Hong Kong International Airport after the lifting of coronavirus disease (COVID-19) movement controls in Hong Kong, China December 14, 2022. REUTERS/Tyrone Siu 

Travellers arrive at Hong Kong International Airport after the lifting of coronavirus disease (COVID-19) movement controls in Hong Kong, China December 14, 2022. REUTERS/Tyrone Siu 

Travellers sit at Hong Kong International Airport after the lifting of coronavirus disease (COVID-19) movement controls in Hong Kong, China December 14, 2022. REUTERS/Tyrone Siu 

Travellers arrive at Hong Kong International Airport after the lifting of coronavirus disease (COVID-19) movement controls in Hong Kong, China December 14, 2022. REUTERS/Tyrone Siu 

Travellers are seen silhouetted at Hong Kong International Airport after the lifting of coronavirus disease (COVID-19) movement controls in Hong Kong, China December 14, 2022. REUTERS/Tyrone Siu 

A traveller is seen at the Hong Kong International Airport on the first day the COVID hotel quarantine has been scrapped, in Hong Kong, China September 26, 2022. REUTERS/Tyrone Siu 

Travellers arrive at the Hong Kong International Airport on the first day the COVID hotel quarantine has been scrapped, in Hong Kong, China September 26, 2022. REUTERS/Tyrone Siu 

Traveller hugs her family member at the Hong Kong International Airport on the first day the COVID hotel quarantine has been scrapped, in Hong Kong, China September 26, 2022. REUTERS/Tyrone Siu 

Travellers arrive at the Hong Kong International Airport on the first day the COVID hotel quarantine has been scrapped, in Hong Kong, China September 26, 2022. REUTERS/Tyrone Siu 

Travellers arrive at the Hong Kong International Airport on the first day the COVID hotel quarantine has been scrapped, in Hong Kong, China September 26, 2022. REUTERS/Tyrone Siu 

Travellers arrive at the Hong Kong International Airport on the first day the COVID hotel quarantine has been scrapped, in Hong Kong, China September 26, 2022. REUTERS/Tyrone Siu 

A traveller reacts as he arrives at the Hong Kong International Airport on the first day the COVID hotel quarantine has been scrapped, in Hong Kong, China September 26, 2022. REUTERS/Tyrone Siu 

Travellers arrive at the Hong Kong International Airport on the first day the COVID hotel quarantine has been scrapped, in Hong Kong, China September 26, 2022. REUTERS/Tyrone Siu 

A traveller reacts as he arrives at the Hong Kong International Airport on the first day the COVID hotel quarantine has been scrapped, in Hong Kong, China September 26, 2022. REUTERS/Tyrone Siu 

Travellers queue up for shuttle bus to quarantine hotels at the Hong Kong International Airport, amid the coronavirus disease (COVID-19) pandemic, in Hong Kong, China, August 1, 2022. REUTERS/Tyrone Siu 

A crew member of Cathay Pacific walks at the Hong Kong International Airport Departure Hall, amid the coronavirus disease (COVID-19) pandemic, in Hong Kong, China, August 1, 2022. REUTERS/Tyrone Siu 

Travellers are seen at the Hong Kong International Airport Departure Hall, amid the coronavirus disease (COVID-19) pandemic, in Hong Kong, China, August 1, 2022. REUTERS/Tyrone Siu 

Travellers queue up for shuttle bus to quarantine hotels at the Hong Kong International Airport, amid the coronavirus disease (COVID-19) pandemic, in Hong Kong, China, August 1, 2022. REUTERS/Tyrone Siu 

Cathay Pacific attendants walk beside temporarily closed stores at the Hong Kong International Airport Departure Hall, amid the coronavirus disease (COVID-19) pandemic, in Hong Kong, China, August 1, 2022. REUTERS/Tyrone Siu 

Travellers queue up for shuttle bus to quarantine hotels at the Hong Kong International Airport, amid the coronavirus disease (COVID-19) pandemic, in Hong Kong, China, August 1, 2022. REUTERS/Tyrone Siu 

Travellers queue up for shuttle bus to quarantine hotels at the Hong Kong International Airport, amid the coronavirus disease (COVID-19) pandemic, in Hong Kong, China, August 1, 2022. REUTERS/Tyrone Siu 

Travellers queue up for shuttle bus to quarantine hotels at the Hong Kong International Airport, amid the coronavirus disease (COVID-19) pandemic, in Hong Kong, China, August 1, 2022. REUTERS/Tyrone Siu 

Travellers wearing face shield walk through Hong Kong International Airport Departure Hall, amid the coronavirus disease (COVID-19) pandemic, in Hong Kong, China, August 1, 2022. REUTERS/Tyrone Siu 

Travellers walk past an installation featuring a medical worker at the Hong Kong International Airport Departure Hall, amid the coronavirus disease (COVID-19) pandemic, in Hong Kong, China, August 1, 2022. REUTERS/Tyrone Siu 

A woman adjusts her mask at the Hong Kong International Airport Departure Hall, amid the coronavirus disease (COVID-19) pandemic, in Hong Kong, China, August 1, 2022. REUTERS/Tyrone Siu 

A Chinese traveller rests outside a temporarily closed restaurant at the Hong Kong International Airport Departure Hall, amid the coronavirus disease (COVID-19) pandemic, in Hong Kong, China, August 1, 2022. REUTERS/Tyrone Siu 

A woman wearing face shield walks through the Hong Kong International Airport Departure Hall, amid the coronavirus disease (COVID-19) pandemic, in Hong Kong, China, August 1, 2022. REUTERS/Tyrone Siu 

A Greater Bay Airlines aircraft is seen parked at Hong Kong International Airport in Hong Kong, China, March 31, 2022. REUTERS/Tyrone Siu 

People walk in front of a screen displaying clouds at the arrivals hall of the Hong Kong International Airport amid the coronavirus disease (COVID-19) pandemic in Hong Kong, China, March 21, 2022. REUTERS/Tyrone Siu 

A traveller walks in the departure hall at the Hong Kong International Airport amid the coronavirus disease (COVID-19) pandemic in Hong Kong, China, March 21, 2022. REUTERS/Tyrone Siu 

A child wearing a face mask looks on at the check-in counters of the Hong Kong International Airport amid the coronavirus disease (COVID-19) pandemic in Hong Kong, China, March 21, 2022. REUTERS/Tyrone Siu 

Travellers wearing face masks queue at the check-in counters of the Hong Kong International Airport amid the coronavirus disease (COVID-19) pandemic in Hong Kong, China, March 21, 2022. REUTERS/Tyrone Siu 

A traveller wearing a protective face mask walks through the Hong Kong International Airport during the coronavirus disease (COVID-19) pandemic in Hong Kong, China, March 17, 2022. REUTERS/Tyrone Siu 

A cleaner works in front of a screen displaying clouds, behind an area for passengers heading to quarantine, in the arrivals hall at the Hong Kong International Airport, during the coronavirus disease (COVID-19) pandemic in Hong Kong, China, March 17, 2022. REUTERS/Tyrone Siu 

A view shows a closed departure hall at the Hong Kong International Airport during the coronavirus disease (COVID-19) pandemic in Hong Kong, China, March 17, 2022. REUTERS/Tyrone Siu 

A traveller wearing a protective face mask and face shield sits in front of check-in counters at the Hong Kong International Airport during the coronavirus disease (COVID-19) pandemic in Hong Kong, China, March 17, 2022. REUTERS/Tyrone Siu 

A traveller waits for PCR test to prevent the spread of the coronavirus disease (COVID-19), as he arrives at the Hong Kong International Airport, in Hong Kong, China February 21, 2022. REUTERS/Tyrone Siu 

Travellers wear face masks to prevent the spread of the coronavirus disease (COVID-19), as they arrive at the Hong Kong International Airport, in Hong Kong, China February 21, 2022. REUTERS/Tyrone Siu 

An airport employee checks the temperature of travellers to prevent the spread of the coronavirus disease (COVID-19), as they arrive Hong Kong International Airport, in Hong Kong, China February 21, 2022. REUTERS/Tyrone Siu 

Passengers wearing face masks stand at the departures hall of Hong Kong International Airport, following infections of the coronavirus disease (COVID-19) in Hong Kong, China, January 11, 2022. REUTERS/Lam Yik 

People wearing face masks sit near a sign reminding passengers to maintain social distance at Hong Kong International Airport, following infections of the coronavirus disease (COVID-19) in Hong Kong, China, January 11, 2022. REUTERS/Lam Yik 

A man enters a community testing centre at Hong Kong International Airport, following infections of the coronavirus disease (COVID-19) in Hong Kong, China January 11, 2022. REUTERS/Lam Yik 

A woman walks past empty counters of Cathay Pacific at Hong Kong International Airport, following infections of the coronavirus disease (COVID-19) in Hong Kong, China January 11, 2022. REUTERS/Lam Yik 

A flight attendant walks under an information board at the arrivals hall of Hong Kong International Airport, following infections of the coronavirus disease (COVID-19) in Hong Kong, China January 11, 2022. REUTERS/Lam Yik 

A Cathay Pacific Airways plane arriving from Hong Kong lands at the international terminal at Sydney Airport, as countries react to the new coronavirus Omicron variant amid the coronavirus disease (COVID-19) pandemic, in Sydney, Australia, November 30, 2021. REUTERS/Loren Elliott 

Members of Hong Kong team arrive at Narita international airport ahead of Tokyo 2020 Olympic Games in Narita, east of Tokyo, Japan July 17, 2021. REUTERS/Issei Kato 

Members of Hong Kong team arrive at Narita international airport ahead of Tokyo 2020 Olympic Games in Narita, east of Tokyo, Japan July 17, 2021. REUTERS/Issei Kato 

Members of Hong Kong team arrive at Narita international airport ahead of Tokyo 2020 Olympic Games in Narita, east of Tokyo, Japan July 17, 2021. REUTERS/Issei Kato 

Members of Hong Kong team arrive at Narita international airport ahead of Tokyo 2020 Olympic Games in Narita, east of Tokyo, Japan July 17, 2021. REUTERS/Issei Kato 

Passengers wearing protective suits (PPE) line up to board their plane for an international flight at Hong Kong airport amid the spread of the coronavirus disease (COVID-19), China July 9, 2021. REUTERS/Thomas Peter 

Passengers wearing protective suits (PPE) line up to board their plane for an international flight at Hong Kong airport amid the spread of the coronavirus disease (COVID-19), China July 9, 2021. REUTERS/Thomas Peter 

Passengers wearing protective suits (PPE) line up to board their plane for an international flight at Hong Kong airport amid the spread of the coronavirus disease (COVID-19), China July 9, 2021. REUTERS/Thomas Peter 

A group of people wave farewell to their friends departing to United Kingdom at the Hong Kong International Airport in Hong Kong, China June 30, 2021. REUTERS/Tyrone Siu 

A closed counter is seen at the departures hall of the Hong Kong International Airport in Hong Kong, China June 30, 2021. REUTERS/Tyrone Siu 

A woman hugs with her friend before departing to United Kingdom at the Hong Kong International Airport in Hong Kong, China June 30, 2021. REUTERS/Tyrone Siu 

A group of people wave farewell to their friends departing to United Kingdom at the Hong Kong International Airport in Hong Kong, China June 30, 2021. REUTERS/Tyrone Siu