Workers wearing protective suits check customers' health QR codes at the entrance of a re-opened shopping mall in in Wuhan in central China's Hubei province. (File photo: Xinhua)

Chinese health authority said on Saturday it received four reports of new confirmed COVID-19 cases on the Chinese mainland on Friday, all of which were imported cases. 

The Chinese mainland registered no deaths and one suspected case on Friday.

According to the National Health Commission, 11 people were discharged from hospitals after recovery, while the number of severe cases reduced one to three.

As of Friday, the mainland had reported a total of 1,738 imported cases. Of the cases, 1,692 had been discharged from hospitals after recovery, said the commission.

Also on Friday, four new asymptomatic COVID-19 cases were reported on the mainland, including one imported. The commission said 396 asymptomatic cases were still under medical observation, including 24 from abroad.