Admiral Zheng He, a prominent navigator and diplomat of Ming China, completed his third treasure voyage, an expedition that sought to enhance trade and establish Chinese presence in the Indian Ocean. This voyage was marked by extensive travels across Southeast Asia and into the Indian Ocean, encompassing visits to various kingdoms. On this particular journey, Zheng He successfully captured the Sinhalese king, an outcome of the ongoing Ming–Kotte War, which was fought between the Ming Dynasty and the Kingdom of Kotte in present-day Sri Lanka.

Upon returning to Nanjing, Zheng He's triumphant arrival was met with much fanfare. The presentation of the Sinhalese king to the Yongle Emperor was not merely a display of military success; it also served as a symbol of Ming China's growing influence and stature in international affairs. This gesture was significant, as it emphasized Zheng He’s role in advancing the empire’s diplomatic objectives through the demonstration of military might and benevolent diplomacy towards the subjugated rulers.

Zheng He’s expeditions were not only about military conquests; they also focused on establishing trade routes and cultural exchanges, enhancing China’s global influence. His voyages marked a pivotal moment in maritime history, showcasing China’s naval capabilities and fostering relations with distant nations, which would have lasting impacts on trade and diplomacy in the region.