The omicron wave of the COVID-19 pandemic has put enormous pressure on China and has
caused dynamic zero-case policy changes.1 As of November 30, 2022, there were 37,347
confirmed cases in 31 provinces across the country (including 99 severe cases and
a severe rate of 265/100,000).2 With the expansion of the scope of infection and the
reduction of the rate of severe patients, the central government requires to improve
the treatment capacity of hospitals to avoid the run out of medical resources.