Contrary to the Phra Lak Phra Lam, most historians believe Vientiane was an early Khmer settlement centered around a Hindu temple, which the Pha That Luang would later replace. In the 11th and 12th centuries, the time when the Lao and Thai people are believed to have entered Southeast Asia from Southern China, the few remaining Khmers in the area were either killed, removed, or assimilated into the Lao civilization, which would soon overtake the area.