It’s nine o’clock in the evening when Wing Shya answers the phone. The time is no bother for the acclaimed photographer, who has worked with just about every Hong Kong celebrity in existence. “I usually stay up very late,” he says. Besides, there isn’t much else to do: he is on day eleven of a two-week quarantine in Shanghai. Wing is there to film a television commission, but first, he must undergo the ritual that has become an unfortunate part of travel during the Covid-19 pandemic.