Laiwu is a prefecture-level city in central Shandong Province, People's Republic of China. The smallest prefecture-level city in the Province, it borders the provincial capital of Jinan to the north, Zibo to the east and Tai'an to the southwest. The prefecture-level city of Laiwu administers 2 county-level divisions, both of which are districts. During the Spring and Autumn Period (770 BC-476 BC), this area was ruled by the Lu and Qi kingdoms. In the Han Dynasties (206 BC-240 AD), Yingxian, Muxian and Laiwu counties coexisted there, and the name of Laiwu was derived from the Laiwu Valley in the county. Laiwu County was later abolished, but then restored again in the Tang Dynasty (618-907).