SHANGHAI, Dec 10 (Reuters) - China on Wednesday reported 63 new coronavirus cases on the mainland for Dec. 9, compared with 83 cases a day earlier, the health authority said. Of the new infections, 37 were local cases compared with 60 a day earlier, the National Health Commission said in a statement. There were no new deaths. China also reported 43 new asymptomatic patients, compared with 33 a day earlier. As of Dec. 9, mainland China had a total of 99,517 confirmed coronavirus cases, it said. China"s death toll from the coronavirus remained unchanged at 4,636.