The Covid-19 pandemic disrupted movement between Hong Kong and Macau on a scale unseen since the weeks immediately after the Japanese occupation of Hong Kong in late 1941. During the war years, one of the institutions that enabled communications between the two neighbouring territories was the Macau Delegation of the Portuguese Red Cross Society, forerunner of today’s Macau Red Cross (澳門紅十字會). Our colleague Dr Helena F. S. Lopes has written about this in the latest blog post on the website of Project Macau History, created and directed by Hong Kong History Project project alumna Dr Catherine S. Chan.