Shanghai slowly whirred back to life yesterday as a range of COVID-19 restrictions were eased after a two-month lockdown that confined residents of the Chinese city to their homes and battered the country’s economy. The commercial hub of 25 million people was closed down in sections from late March, when the Omicron variant of SARS-CoV-2 fueled China’s worst outbreak in two years. After some rules were gradually relaxed over the past few weeks, authorities yesterday began allowing residents in areas deemed low-risk to move around the city freely. “It feels like we’ve all been through a lot of trauma, a collective trauma,”