http://en.wikipedia.org/wiki/Duanwu_Fes ... nd_Romance
Origins
The Duanwu Festival is believed to have originated in ancient China. There are a number of theories about its origins. There are a number folk traditions, beliefs and explanatory myths connected to the observance. Today, the best, most widely known legend relates to the death by suicide of Qu Yuan, a scholar and minister to the King of Chu, in 278 BC an era in Chinese history that is referred to as the Warring States period. Scholars wrote literary works, including poetry. Qu Yuan is commonly referred to as a "poet" and a "statesperson", however he is more properly considered as a ministerial scholar.
Qu Yuan
The best-known traditional story holds that the festival commemorates the death of poet Qu Yuan (c. 340 BC - 278 BC) of the ancient state of Chu, in the Warring States Period of the Zhou Dynasty.[4] A descendant of the Chu royal house, Qu served in high offices. However, when the king decided to ally with the increasingly powerful state of Qin, Qu was banished for opposing the alliance. Qu Yuan was accused of treason.[4] During his exile, Qu Yuan wrote a great deal of poetry, for which he is now remembered. Twenty-eight years later, Qin conquered the Chu capital. In despair, Qu Yuan committed suicide by drowning himself in the Miluo River on the fifth day of the fifth month.
It is said that the local people, who admired him, threw food into the river to feed the fish so that they would not eat Qu Yuan's body.[4] This is said to be the origin of zongzi. The local people were also said to have paddled out on boats, either to scare the fish away or to retrieve his body. This is said to be the origin of dragon boat racing.