This entire equation and line of thought does not work because it is assuming an equal number of deaths to occur (from non-COVID-19) in Wuhan operating as a normal society and in a Wuhan that operates basically without hospitals because COVID-19 has taken up more than the entire hospital capacity of the city. The hospital's main function is to save lives so how can the mortality rate of the population be the same with or without hospitals?ok so its ~20 million x 0.7% = 140K annually. Roughly 12K per month.
so during lockdown, there should 24K deaths due to other non-COVID 19 reasons.
the remaining 21K+ deaths is extra in Wuhan then during the lockdown. Still significantly larger number than the 3K+ official numbers.
The correct line of thought would be total death toll in the period combating COVID-19 minus normal death toll in equivalent period (inflated by a couple percentage points due to aging population) minus all deaths from non-COVID-19 causes resultant from lack of healthcare available (roughly) equals deaths caused by COVID-19. That "all deaths from non-COVID-19 causes resultant from lack of healthcare available" basically equals all the lives that hospital care saves in such a period under normal (non-COVID-19) times (although reduced by a wane in traffic/work-related accidents and injuries since both work and travel are severely reduced by lockdown).