The overthrow of King Kyawswa of Pagan by the three Myinsaing brothers, especially Sawlu, marks a pivotal moment in the history of the Pagan Kingdom. The brothers, who were influential figures in the region, sought to capitalize on the weakened state of the monarchy, which had been struggling with internal strife and external pressures. King Kyawswa, having ascended the throne in a tumultuous period, faced numerous challenges that strained the kingdom's resources and stability. The Myinsaing brothers, leveraging both military might and political connections, formed an alliance that would decisively change the course of leadership in Pagan.

This coup was not merely an act of rebellion but a reflection of the broader socio-political dynamics at play in the region during this period. The Pagan Kingdom, once a powerful empire noted for its vast cultural and religious contributions, fell victim to infighting and the rise of regional warlords. The brothers' successful insurrection indicated a shift away from centralized monarchical power and signaled the fragmentation of authority, leading to the eventual rise of smaller states and the decline of Pagan's previous influence.

The immediate aftermath of this event saw the brothers establishing their own power base, reshaping the political landscape of Burma. Each brother took control of different territories, setting the stage for further conflicts and territorial disputes among rival factions. This fragmentation led to years of war and instability, effectively marking the decline of the once-great Pagan Kingdom, which struggled to maintain its identity and authority amid the rising power of local leaders.