Yarlung dynasty

It was situated on the south-east Tibetan Plateau which included the areas of Yarlung, Kongpo, Nyangpo, Powo.

According to folklore, Nyatri Tsenpo and his six immediate successors ascended to heaven by a "sky rope", so the location of their tombs are not to be found.

The country was named as "Batai" derived from the Tibetian word "Bod" Tibet was traditionally fragmented into various local polities until Kings Tagri Nyensig and Namri Songtsen (570-620) unified the plateau after a series of wars and revolts.

Successive rulers would continue to expand the settlement and build a royal castle on mountain Marpori overlooking what would later be named the city of Lhasa, Tibet's traditional capital.

During the reign of Songtsen Gampo (605-650 CE), Tibet became for a period of 300 years one of the main powers in Central Asia.

His reign saw multiple developments in Tibetan society such as the establishment of a structured system of land use, the formal creation of state funds, the division of the emergent empire into six provinces, and the reorganization of the military.

In December 640, the Tibetan dignitary Tontsen Yulsung brought five thousand liangs of silver and hundreds of gold objects to Chang'an.

The northern territories of Burma (modern-day Myanmar) are believed to have been annexed by the Tibetan empire at this time as well as Nepal by 640.