query: What is the oldest city in Myanmar?
passage: Pyu city-states
Beikthano (Burmese: ဗိဿနိုး [beɪʔθənó]) situated in the irrigated Minbu region (near present-day Taungdwingyi) with direct land access to the well-watered Kyaukse plains to its northeast, is the oldest urban site so far discovered and scientifically excavated site. Its remains—the structures, pottery, artefacts, and human skeletons—date from 200 BCE to 100 CE. Named after the Hindu god Vishnu, the city may be the first capital of a culturally and perhaps even politically uniform state in the history of Burma. It was a large fortified settlement, measuring approximately 300 hectares inside the rectangular (3km by 1km) walls. The walls and fortifications along it measured six meters thick, and are radiocarbon dated to a period between 180 BCE and 610 CE. Like most subsequent cities, the main entrance of the walls led to the palace, which faced east. Stupas and monastic buildings have also been excavated within the city walls.[11][19]
passage: Early Pagan Kingdom
However, some scholars believe that Burmans had arrived in Myanmar much earlier than the mainstream opinion holds. Htin Aung contends that the arrival of Burmans may have been a few centuries earlier, perhaps the early 7th century. Historians Michael Aung-Thwin and Matrii Aung-Thwin write that the 19 villages that first formed the city of Pagan according to the chronicles are "probably" "legendary" but "the origins of the Burmese speakers in Myanmar may well be earlier than, and had nothing to do with, the Nanzhao raid of AD 832".