《汉书·志·食货志上》
到了秦始皇的时候，便吞并天下，内部大兴土木，外面排斥夷狄，收取过半的赋税，征发居里门左侧的平民去防守边疆。
至于始皇，遂并天下，内兴功作，外攘夷狄，收泰半之赋，发闾左之戍。
By the time of the First Emperor of Qin, he had annexed the world, carried out large-scale construction projects domestically, excluded the barbarians abroad, collected more than half of the taxes, and conscripted the common people on the left side of the Juyou Gate to defend the border.