地數
Calculations of the Earth
桓公曰：“地數可得聞乎？”管子對曰：“地之東西二萬八千里，南北二萬六千里。”
Duke Huan asked: 'May I hear about the calculations of the earth?' Guan Zhong replied: 'The earth extends twenty-eight thousand li from east to west and twenty-six thousand li from north to south.'
Notes
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This chapter presents a grand geographical and mineral survey, then develops the salt monopoly theory in detail, explaining how Qi can use its coastal salt resources to generate revenue equivalent to taxing all under heaven without anyone perceiving it as taxation.