The capacity of Shanghai's postal and courier services has been restored to one-sixth of the normal standard as the city's COVID-19 surge continues to improve.

More than a million parcels are being delivered every day as most courier firms have been authorized to resume operations, according to the Shanghai Postal Administration.

"However, some consumers might still be frustrated since there are still some bottlenecks and difficulties," said Yu Hongwei, the postal administration's deputy director.