CREATE TABLE table_23567 ("English Name" TEXT, "Simplified" TEXT, "Traditional" TEXT, "Pinyin" TEXT, "Foochow" TEXT, "Area" FLOAT, "Population" FLOAT, "Density" FLOAT)

Name the density for
SELECT "Density" FROM table_23567 WHERE "Traditional" = '古田縣'
SELECT "Density" FROM "table_23567" WHERE "Traditional" = '古田縣'