Hong Kong is expected to see seven new Covid-19 cases on Saturday, the lowest in about two months, according to a medical source, as more than 1 million people signed up for the city’s one-off free mass testing scheme.Meanwhile, residents will get another round of free reusable masks soon, Secretary for Innovation and Technology Alfred Sit Wing-hang said on Saturday morning.Saturday’s figures marked the lowest number of daily cases since July 3, when five infections were recorded.As of Friday,…