There are many satellites in the air, monitoring air quality around the world. They were put up to monitor Climate Change. One picture can tell a lot, this picture measured the level of SO2 on February 8 of this year:
The map looks pretty good, except for two yellow spots, one over Wuhan, China and one over Chongqing, China. The one over Wuhan had a SO2 concentration of up to 1700 µg/m3 , corresponding to 0.65 ppm and the one over Chongqing 750 µg/m3 corresponding to 0.286 ppm, tolerable, except for sensitive people. There are no such clouds in any other area of the world, including the rest of China.
These two SO2 clouds can only have come from one source, cremations. A person contains about 0,3% Sulfur, and a 120 lb person generates about 3/4 lb of SO2 gas when cremated. SO2 is a gas heavier than air, so it stays close to ground until it is dispersed. The cloud over Wuhan is large, about 100 km in diameter with an average concentration of 200 µg/m3 up to a height of 3 m, a wild guess. The number cremated during that time snapshot could be about 13500 in Wuhan alone. Add to that about a quarter as many in Chongqing making the total about 17000 cremations going on simultaneously. A cremation takes about 3 hours, add about 2 hours for preparation and collection of the remaining ashes, so let us assume they did 4 cremations in a 24 hour period. That will bring us to about 70000 cremations in a 24 hour period. It is reasonable to assume that nearly all these cremations was from COVID-19 victims, since a normal rate of cremation for a city of Wuhan’s size, (11,000,000), a death rate in China of 7 per 1000 people would be about 210 cremations per day.
The clouds tell the story.