noun
70% government, 30% farmer tax rate
Historical term for the heavy land-tax rate during the Edo period, where the government took 70% of the crop and farmers kept 30%. Used in discussions of Edo-era economics.
江戸時代の年貢率は七公三民だったと言われる。
It is said that the land-tax rate during the Edo period was 70% for the government and 30% for the farmers.
Compound of 七 (seven, here 70%), 公 (public, government), 三 (three, here 30%), and 民 (people, farmers). The reading しちこうさんみん follows standard on'yomi.