So I was just looking at some of the most deadly wars on Wikipedia and noticed the Taiping Rebellion. Upon further inspection I learned it was 14 years long and (according to wikipedia) resulted in between 20-30 million deaths. Thus amount seems monumental. The rate of death would have to be insane(about 200 deaths per hour if you take the death toll as 25,000,000). How is this rate of death possible given that the Qing army only fielded 1,100,000 men? Also what was the impact on the local culture and demographics from losing all those men? Sorry if there are a lot of questions but really any insight on the topic would be fascinating, even if it's just scholarly sources that I can look into.
Forgot to ask this in the op but how is there an uncertainty of 10 million? If there were only 20 million deaths that would be an uncertain of about 50%. Is it due to poor record keeping and census data? Also any information on record keeping for death tolls in older wars would be interesting as wikipedia sites the conquest of the Americas as being between 8 million and 138 million casualties.