BEIJING, Nov 21 (Reuters) - China reported 17 new confirmed coronavirus cases for Nov. 20, down from 23 a day earlier, its health authority said on Sunday. Of the new infections, four were locally transmitted cases, according to a statement by the National Health Commission, up from three a day earlier. China reported eight new asymptomatic cases, which it classifies separately from confirmed cases, down from 16 a day earlier. There were no new deaths, leaving the death toll at 4,636. As of Nov. 20, mainland China had 98,467 confirmed coronavirus cases.