Dearest Piotr:
You have approached a different approach to this situation so serious that humanity is living.
You are very right!
As we know, China is the country with the greatest overpopulation on the planet. Its main source of energy is based on thermoelectric generation, which consists of burning large amounts of hydrocarbons that throw tons of pollution into the atmosphere.
In addition to this, the production of CO2 from the car fleet reaches absurd levels.
With the Coronavirus epidemic, Chinese citizens have had to complete a massive quarantine which has transformed their streets into ghost towns. This has had a direct impact on pollution levels, which have decreased drastically.
The satellite images speak for themselves.
Images from NASA