All primary and middle schools and kindergarten classes in Nanjing, East China's Jiangsu province, were suspended as heavy smog choked the city on Dec 5. Schools will post a notice when they reopen, after the red alert for fog and smog is lifted, the city's educational authorities said. The government of Nanjing on Wednesday initiated a red-coded emergency response to air pollution, the highest response level, which includes heightened controls on industrial sources of pollutants. China's central and eastern areas have been hit by a new round of foggy and smoggy weather since the start of December. The National Meteorological Center predicted the situation will continue until Sunday. [Photo/icpress.cn]