Xi'an, capital of northwest China's Shaanxi Province, will conduct a new round of mass testing from Monday noon after a recent outbreak of COVID-19.

The city is in its fourth day of closed-off management and restrictive measures will be adjusted according to the testing results, local authorities said on Sunday.

The city has logged a total of 485 local infections of COVID-19 as of Saturday, since the virus resurfaced on December 9.