Nearly every country that is currently testing believes that they are catching <25% of cases and that the real mortality rate of coronavirus is less than 1%. Most countries only test serious cases and turn away anyone asymptomatic or who just appears to have a mild case.
True, but the video is stating that on specific days China reported wrong numbers of positive cases on purpose. Still we need to verify the source of the leaked document
https://www.youtube.com/watch?v=XoMxG165_Rg