Residents emerge from a week-long lockdown inside a high-rise building in Hong Kong, while those in a neighbouring block -- still under lockdown -- queue to take their compulsory Covid-19 tests. Nearly 5,000 residents at a high-rise public housing estate in the densely populated Kwai Chung neighbourhood have been placed under lockdowns of five to seven days. Meanwhile, a father greets his wife and son from outside a quarantine hotel, after his family returned from a trip to Germany. Hong Kong is one of the few places left in the world still pursuing a zero-Covid strategy that has largely kept the virus at bay but left the finance hub internationally isolated. IMAGES AND SOUNDBITES