[经] progressive tax rate on excess earning

chāo é shōu yì lěi jìn shuì lǜ ㄔㄠ ㄜˊ ㄕㄡ ㄧˋ ㄌㄟˇ ㄐㄧㄣˋ ㄕㄨㄟˋ lv4