The Mongols failed in their first attempt to invade Đại Việt. But they soon planned a return. It was not like them to give up easily. After all they had grown from a small ethnic group to an empire that spread from Asia to Europe. 

The Trần court was all too aware of this imminent threat. During time of peace, Trần Thủ Độ and Trần Hưng Đạo worked hard to ready their troops. With strong resolve and solidarity, once again Đại Việt successfully pushed back the Mongols who had ravaged many parts of the world back then.