But within a comparatively short time he established a large kingdom spanning Ladakh, Zanskar, Lahul, Spiti, Guge and Purang.

[2][1] Nyimagon established a small kingdom in Rala (Chinese: 热拉; pinyin: Rè lā), near Shiquanhe in the Sengge Zangbo valley, in or around 912.

[12] August Hermann Francke, who translated the Ladakhi Chronicles, proposed that 'Khor-skyoṅ must have been the only daughter of the king of Purang.

The influence of wife's family as well as his own royal lineage would have contributed to Nyimagon's success in building a large kingdom.

He gave Palgyigon (Wylie: dpal gyi mgon), his eldest son, the kingdom of Maryul (now known as Ladakh).

He founded the Tholing Monastery, which became the premier centre for Buddhist learning and a key enabler of the Second diffusion of Buddhism to Tibet.