Lifting of compulsory quarantine requirement on arrival at Hong Kong

From 26 September 2022, there is no more compulsory hotel quarantine for inbound travellers to Hong Kong from overseas places or Taiwan.  Under the new arrangement dubbed "0+3", travellers will undergo medical surveillance at home or at a hotel of their choice for 3 days.  The relevant government press release can be found here.
 
The gist
 
For non-Hong Kong residents aged 12 or above, they are allowed to come to Hong Kong if they are fully vaccinated or hold a COVID-19 vaccination medical exemption certificate.  Boarding requirements are simplified by presenting a negative result of a rapid antigen test (RAT) conducted within 24 hours before departure, instead of a nucleic acid test that was conducted within 48 hours.
 
After arriving Hong Kong, travellers will undergo a nucleic acid test at the airport but will not need to wait for the test result at the airport and can leave there by any transport means.
 
Upon obtaining a negative test result, the travellers will be given an amber code on their LeaveHomeSafe mobile app during the 3-day medical surveillance period.  With the amber code, travellers are free to go out during those 3 days except for entering premises which proactively check the vaccine pass, such as restaurants and bars.
 
After completing the medical surveillance period, the travellers will be subject to self-monitoring in the subsequent 4 days, making it a 7-day observation period in total.
 
Inbound travellers will have to take RAT daily, and nucleic acid tests once every two days in the first seven days upon arrival in Hong Kong. 
 
With effect from 21 November 2022, the nucleic acid tests would only be required on the day of arrival at Hong Kong and on Day 2 after arrival at Hong Kong.
 
Please refer to the COVID-19 webpage of HKSAR Government for the latest information in details.