《水经注·卷二十六》
秦始一王很高兴，因此在这里逗留了三个月，他把三万户平民迁移到琅邪山下，豁免赋税十二年。
秦王乐之，因留三月。乃徙黔首三万户于琅邪山下，复十二年。
Qin Shi Huang was very happy, so he stayed here for three months, and he relocated 30,000 common households to the foot of Langya Mountain, exempting them from taxes for twelve years.