《史记·七十列传·太史公自序》
从前颛顼统治天下时，任命南正重掌管天文，北正黎掌管地理。
昔在颛顼，命南正重以司天，北正黎以司地。
Formerly when Chwan-hsu ruled the world, he appointed Chong, the Commissioner of the South, to take charge of astronomy, and Li, the Commissioner of the North, to take charge of geography.