Beijing residents shop groceries in a super market on Sunday. Photo:Li Hao/GT Some areas in Beijing's Chaoyang district saw residents shopping in mass for groceries after cases of COVID-19 were detected. Although several markets suffered a temporary shortages of fresh meat and vegetables, markets and online platforms replenished their goods timely and promised to follow up with normal supplies. The city's health authorities announced on Sunday's news conference that Chaoyang district, home to nearly 3.5 million, registered 11 new COVID-19 infections between Saturday afternoon and Sunday afternoon. Among the cases were middle school students, their teachers and relatives. Two residential…