A volunteer team consisting of 180 COVID-19 patients at a huge quarantine site for people with mild symptoms and asymptomatic infections was launched on Tuesday, according to Renji Hospital, which recruited the team.The volunteers will mainly help distribute food, contact maintenance staff if they detect equipment failure and do night patrolling.The Shanghai World Expo Exhibition &\\; Convention Center in the Pudong New Area covers a total construction area of 152,000 square meters. It served as the "\\;Expo theme pavilion"\\; during the World Expo 2010 Shanghai and is one of the five key permanent structures left over from the global exhibition.