from Wikipedia, in Battle of Yamen, Zhang Shijie ordered about a thousand warships to be chained together and placed Emperor Huaizong's boat in the center of his fleet. Seeing that the battle was lost, Zhang Shijie picked out his finest soldiers and cut about a dozen ships from the formation in an attempted breakout to save the emperor. The Yuan forces quickly advanced to the center and to Emperor Huaizong, slaughtering everyone in their way. There, Prime Minister Lu Xiufu saw no hope of breaking free, and jumped into the sea with the boy emperor, killing them both.
so Lu and Huaizong jumped from the cliffs or the ship to death?
Edited by Optimus, 15 September 2011 - 10:36 PM.