Mongol conquest of Song China: Zhao Bing (pictured), the last Song emperor, drowned at the end of the Battle of Yamen, bringing the Song dynasty to an end after three centuries.

The Mongol conquest of the Song dynasty was the final phase of the Mongol conquest of China, beginning under Ögedei Khan and being completed under Kublai Khan. It is considered the last great military achievement of the Mongol Empire; upon its completion, the Mongols ruled all of continental East Asia under the Han-style Yuan dynasty that had been founded as a division of the Mongol Empire.

Zhao Bing, also known as Emperor Bing of Song or Bing, Emperor of Song (宋帝昺), was the 18th and last emperor of the Song dynasty of China, who ruled as a minor between 6 and 7 years of age.

The Song dynasty (960–1279) was an imperial dynasty of China that succeeded the period referred to as Five Dynasties and Ten Kingdoms period (907–960) and preceded the Yuan dynasty (1271–1368), which conquered the Song dynasty in 1279. The conventional division into the Northern Song dynasty (960–1127) and Southern Song dynasty (1127–1279) is created by the conquest of northern China by the Jin dynasty (1115–1234) in 1127 and the consequent shift of the capital from Bianjing in the north to Lin'an in the south.

The Battle of Yamen, also known as the Battle of Yashan, was a naval battle which took place in southern China on 19 March 1279. It is considered to be the last stand of the Song dynasty against the invading forces of the Mongol-led Yuan dynasty. Although outnumbered 10 to 1, the Yuan navy delivered a crushing tactical and strategic victory, destroying the Song.