The History of the Chinese Sui tradition contains records that a state called Chenla sent a government office to China in 616 or 617 C.E. It says, that Chenla was a vassal of Funan, however under its ruler Citrasena-Mahendravarman vanquished Funan and picked up autonomy.
The vast majority of the Chinese recordings on Chenla, including that of Chenla overcoming Funan, have been challenged since the 1970s as they are for the most part in light of single comments in the Chinese archives, as creator Claude Jacques underscored the exceptionally ambiguous character of the Chinese expressions "Funan" and 'Chenla', while more household epigraphic sources get to be accessible. Claude Jacques condenses: "Exceptionally fundamental authentic mix-ups have been made" in light of the fact that "the historical backdrop of pre-Angkorean Cambodia was recreated substantially more on the premise of Chinese records than on that of [Cambodian] engravings" and as new engravings were found, specialists "liked to alter the newfound actualities to the underlying diagram instead of to raise doubt about the Chinese reports".
The thought of Chenla's inside being in present day Laos has likewise been challenged. "All that is required is that it inland from Funan." The most essential political record of pre-Angkor Cambodia, the engraving K53 from Ba Phnom, dated AD 667 does not show any political brokenness, either in regal progression of lords Rudravarman, Bhavavarman I, Mahendravarman [Citrasena], Īśānavarman, and Jayavarman I or in the status of the group of authorities who delivered the engraving. Another engraving of a couple of years after the fact, K44, 674 AD, remembering an establishment in Kampot territory under the support of Jayavarman I, alludes to a prior establishment in the season of King Raudravarma, probably Rudravarman of Funan, and again there is no recommendation of political intermittent.
The History of the T'ang declares that soon after 706 the nation was part into Land Chenla and Water Chenla. The names mean a northern and a southern half, which may advantageously be alluded to as Upper and Lower Chenla.
By the late eighth century Water Chenla had turned into a vassal of the Sailendra line of Java - the remainder of its rulers was slaughtered and the nation joined into the Javanese government around AD 790. Land Chenla gained autonomy under Jayavarman II in 802 C.E.
The Khmers, vassals of Funan, achieved the Mekong waterway from the northern Menam River through the Mun River Valley. Chenla, their first free state created out of Funanese impact.
Antiquated Chinese records notice two lords, Shrutavarman and Shreshthavarman who ruled at the capital Shreshthapura situated in advanced southern Laos. The massive impact on the personality of Cambodia to come was created by the Khmer Kingdom of Bhavapura, in the cutting edge Cambodian city of Kampong Thom. Its legacy was its most critical sovereign, Ishanavarman who totally vanquished the kingdom of Funan amid 612-628. He picked his new capital at the Sambor Prei Kuk, naming it Ishanapura.