The Song Huiyao Jigao (960–1279) indicate Siamese people settled in the west central Thailand and their state was called Xiān guó (), while the eastern plain belonged to the Mon of Lavo (), who later fell under the Chenla and Khmer hegemony around the 7th–9th centuries. Those Mon political entities, which also included Haripuñjaya in the north and several city-states in the northeast, are collectively called Dvaravati.
The Song Huiyao Jigao (960–1279) indicate Siamese people settled in the west central Thailand and their state was called Xiān guó (), while the eastern plain belonged to the Mon of Lavo () who later fell under the Chenla and Khmer hegemony around the 7th–9th centuries. Those Mon political entities, which also included Haripuñjaya in the north and several city-states in the northeast, are collectively called Dvaravati.