六公四民
ろくこうよんみん
land-tax rate during the Edo period (the government took 60 percent of the year's rice crop and the farmers kept 40 percent)
四公六民 is read as しこうろくみん (shikourokumin) and means land-tax system during the Edo period under which the government took 40% of the year's crop and the farmers kept 60%.
しこうろくみん
shikourokumin
ろくこうよんみん
land-tax rate during the Edo period (the government took 60 percent of the year's rice crop and the farmers kept 40 percent)
しいちろくじけん
April 16 incident (arrests of communists and members of other anti-government groups; 1929)
よんだいこうがいびょう
the four major pollution-caused illnesses (Minamata disease, Niigata Minamata disease, Yokkaichi asthma, Itai-itai disease)
ろくさんさんよんせい
six-three-three-four system of education (six years of elementary school, three years each of junior and senior high school and four years of university)