Customers enjoy hotpot at a restaurant in Chengdu, southwest China's Sichuan Province, March 21, 2020. (Xinhua/Li Mengxin)

BEIJING, March 23  -- No new domestically transmitted cases of the novel coronavirus disease (COVID-19) were reported on the Chinese mainland on Sunday, the Chinese health authority said Monday.

The National Health Commission received reports of 39 new confirmed COVID-19 cases on the Chinese mainland on Sunday, all of which were imported.