怎样分析大小单双公式规律

简介：Ding tax is also called 'Ding Fu', 'Ding Qian', 'Ding Kou Qian', 'Ding Yin', 'Shen Ding Qian', and 'Ding Suan'. All our citizens in the Ming Dynasty, adult men, need to pay nine taels of ding tax a year. Even young and old, they all have one tael. For a family of six and two strong men, the ding tax is more than two taels a year.