《淮南子·天文训》
天分成九个区域，共有九千九百九十九个小区，离大地五亿万里；天上还有五星、八风、二十八宿、五官、六府，以及紫宫、太微、轩辕、咸池、四守和天阿等。
天有九野，九千九百九十九隅，去地五亿万里；五星，八风，二十八宿，五官，六府紫宫，太微，轩辕，咸池，四守，天阿。
The heavens are divided into nine regions, with a total of ninety-nine thousand nine hundred and ninety-nine districts, five hundred million miles away from the earth; in the heavens, there are also five stars, eight winds, twenty-eight constellations, five organs, six offices, and the Purple Palace, Tai Wei, Xuan Yuan, Xian Chi, Si Shou and Tian A.