Because of this successive generations all established agencies and officials for astronomical observation, whose results were reported to the throne and delivered to the historiographer.
因此歷代都設立專司觀測天文的機構和官員，將觀測結果隨時呈報朝廷，並按時送交史官記錄，正史中「天文志」、「五行志」和「律曆志」，就是天文的觀測紀錄。