Shipping companies are bracing for further port congestion in China due to rising Covid-19 infections and severe weather conditions.

Local shipping sources said piloting services at the Port of Nanjing — one of the main ports along the Yangtze River — are currently not available after one pilot tested positive for coronavirus.

China's zero-tolerance policy on Covid-19 infection has been cited as the reason for the severe action taken by the Port of Nanjing.