The reality is no one really knows except for Xi himself. However, since the virus apparently ran wild for a few months in 2019 because the government refused to believe the Wuhan doctors, in a country that only uses Chinese vaccines (which dont work, even against the original strain), its logical to assume that in an aging population of a country of a billion+ people who live tightly together, that a LOT of older Chinese have passed away (if we are at 800k, they are at least double that) and that the daily case count has to be double or more of ours.
When orange man bad was still in charge, the press would keep writing how bad we were, conveniently not paying attention to China, India, Indonesia, Russia and many other countries that badly underreported their true cases/deaths.