Right after the failed attempt in 1285, the Yuan Dynasty began to prepare for the third major campaign against Đại Việt with the pretext of helping Trần Ích Tắc return as King of Annam. Their 1287 campaign was eventually ended by the Battle of Bạch Đằng on March 8 of Lunar calendar 1288, where Yuan navy was almost destroyed by the troops of Trần Hưng Đạo. In 1289, Trần Emperor issued an order in which the family name of every defected member of Trần clan was changed to Mai (枚), for example Trần Lộng (陳弄) was renamed as Mai Lộng (枚弄), being the only defected prince of Trần clan, Trần Ích Tắc was exempted from this order but he was called in historical accounts of the Trần Dynasty by the name "Ả Trần" ("the woman named Trần").