How do peasants contribute to the decline of han china?

Hello.

The answer is: Crushed by taxes and debt, desperate peasants revolted.

The taxes was so high the people could not pay them so they had to leave.  The decline of han china happend because there was a lost of people and without people you cant have a city.

Have a nice day

less available tax revenue

this basically means that when they get money from taxes wirth having a lower gdp they get less then what others have with a higher gdp