As early as the seventh centuary, drops of Burmese from Yunnan may have invaded the Pyu Empire in the northern hemisphere. Inhabitants of the Pyu Empire were probably several hundred thousand, since in the seventeenth and eighteenth centuries Burma (about the equivalent of today's Myanmar) only lived about 2 million in number.
India had a strong influence on the Pyu city-state cultures. Most southern towns were named in Pali or Sanskrit like Sri Ksetra (Thaye Khittaya) and Vishnu (Beikthano). and Varma. Like the Bebe and Lemyethna, for example, Sri Ksetra was a prototype for the later empty (gu) temple of Pagan.
Somingyi Convent in Pagan's layout from the thirteenth c. was largely the same as that of a convent in Beikthano from the fourth c... Sri Ksetra's sturdy Stupa were again Pagan's prototype like the Shwezigon, Shwehsandaw and Mingalazedi, and finally the Shwedagon in Yangon. Later, the chieftains of major metropolitan states stylized themselves as monarchs and manors largely modelled on the Indian (Hindu) conceptions of the empire.
Burma's history mentions coalitions between states such as Beikthano and Sri Ksetra. All in all, each city-state of Pyu seemed to have control only the town. Pyu towns (660 to 1400 hectares) opposite Pagan (only 140 hectares) indicate that a large part of the people lived within the wall, as the China document.
The Pyu colonies stayed in Upper Burma until the beginning of the pagan empire in the middle of the eleventh centuary, but over the next four hundred years the Pyu were progressively incorporated into the growing Burmese empire of Pagan. Pyu continued to exist until the end of the twelfth cen. The Pyu had adopted Burmese nationality in the thirteenth and vanished in the course of time.
Nevertheless, the Pyu had leave an ineradicable trail on Pagan, whose Burmese leaders took the history and legend of the Pyu as their own. Burmese monarchs of Pagan asserted the lineage of the Sri Ksetra and Tagaung monarchs as early as 850 BC - a complaint rejected by most contemporary scholar.
"The town is of round rectangle form, bricked and filled with water for about two kilometres long and one kilometre afar. Nowadays, the town' s ramparts have almost crumbled to the bottom. Stonewalled ramparts arch inward at each gate, forming a sheltered passage into the town.
There is also a square external walls with round edges, similar to the Beikthano citymap. Sixt Ksetra (Sriksetra or Thaye Khittaya, which means "field of happiness" or "field of glory") was the biggest and most important of all Pyu capitals, also the last and southest.
Situated about five leagues south-east of the contemporary town of Prome, 180 leagues northeast of Rangoon and a few leagues up-country from the Irrawaddy River's lefthand shore, it was established between the fifth and seventh millennia and probably passed Halin in the seventh and eighth millennia.
It was home to at least two and perhaps three of them. King Duttabaung established the second family on March 25, 739 (11th growth of Tagu 101 ME). We do not know when and how Srikshetra, a very wealthy town, went under. The Pyus are believed to have been slowly absorbing by the Burmese as Pagan gained in importance, so that in the latter part of the eleventh cent.
Apart from Sri Ksetra and Beikthano, the remaining Pyu places have not been fully dug up. Allegedly in November 2011, the department planned a Sri Ksetra Sri Ksetra Museum and worked with UNESCO to recognise Sri Ksetra, Beikthano and Halin as World Heritage Heritages.