Rajasinha I vs Yongzheng Emperor

Rajasinha I's forces decisively defeated the Portuguese at the Battle of Mulleriyawa. This was the worst defeat inflicted on the Portuguese in Sri Lanka, nearly driving them from the island.

Rajasinha I converted from Buddhism to Hinduism, adopting the title 'Sivaguru'. This alienated many of his Buddhist subjects and led to internal unrest.

Following his conversion, Rajasinha I ordered the destruction of Buddhist temples and monasteries in his kingdom. This included the Temple of the Tooth in Kotte, which was burned down.

Rajasinha I laid siege to the Portuguese fort of Colombo for over a year. Despite his efforts, the siege failed due to Portuguese naval superiority and the arrival of reinforcements from Goa.

Yongzheng sent Qing armies to suppress the Dzungar Mongol rebellion in Xinjiang. The campaign was costly and initially unsuccessful, but eventually secured Qing control over the region.

Yongzheng implemented sweeping fiscal reforms, including the 'melting fee' tax to cover silver conversion costs and the 'return of the land tax to the state' policy. He also launched a major anti-corruption campaign targeting corrupt officials.

Yongzheng expanded the use of secret palace memorials, allowing officials to communicate directly with the emperor without bureaucratic oversight. This system enhanced imperial surveillance and control over the administration.

Yongzheng purged powerful Manchu nobles and princes who threatened his authority, including his brothers Yinzhi and Yinsi. He also reduced the power of the Eight Banners princes and strengthened the emperor's direct control.

Yongzheng created the Grand Council as a small, efficient body to handle military and state affairs. This institution bypassed the regular bureaucracy and became the central decision-making organ of the Qing government.