Most of Shanghai's metro lines remain closed amid the new COVID-19 outbreak in the city. Line 6 and Line 16, that run in the city's Pudong District, are still operating but have shortened operating hours, from 7 a.m. to 8 p.m. Sun Ruiyi, on-duty manager at Century Avenue Station which handles the running of Line 6, says passenger flow has dropped dramatically. "Century Avenue Station has transfers to four lines. Normal passenger flow can be more than 600,000 on weekdays. But there were only about 150 passengers in this morning," said Sun, adding that most of the passengers now are elderly people who need medical treatment in nearby hospitals.