Shanghai reported 88 locally transmitted COVID-19 cases, 770 local asymptomatic infections, two imported cases, three imported asymptomatic infections and no deaths on Thursday, said the Shanghai Health Commission on Friday morning. Meanwhile, the city's Metro operator announced Metro lines 3, 6, 10 and 16 will operate only between 7 a.m. and 8 p.m. from Sunday. And the city's greenery and public sanitation bureau said downtown parks will gradually reopen from June, with limited capacity and shortened opening hours.