Many traditional Chinese foods
http://www.chinesefolkculture.com/ are intended to honor either the gods or divine persons in history. Zong Zi - a glutinous rice dumpling wrapped in bamboo or reed leaves - is no exception. It is meant to honor Qu Yuan (340-278 BC.), the pioneer poet of ancient China.

Qu Yuan was a famous poet who was also concerned about the fate of his government. Unfortunately his stature aroused the jealousy of the king, who banished him to a remote area. The poet despaired of the government and its policies. When the state's capital was captured by enemies, he committed suicide by drowning himself in the Miluo River (on May 5th according to the Chinese lunar calendar). The Chinese people felt this loss deeply, as he was a much beloved poet. Local folk searched for him in the river, meanwhile dropping dumplings of glutinous rice wrapped in bamboo or reed leaves into the river in order to keep the fishes from attacking Qu Yuan's body.

Since that time, it has been customary on this day to enjoy Zong Zi dumplings as a memorial to the patriotic poet. In addition, there is also a festival called the Duan Wu or Dragon Boat Festival. If you ever visit China during the Dragon Boat Festival, you can't miss the nationwide custom of enjoying Zong Zi. You are sure to be impressed with the delicacy of this snack, and with the faint scent of the leaves imprinted on the skin of the dumplings
More about Zongzi is in
http://www.chinesefolkculture.com/info_view.asp?ID=6129&ArticlePage=1or about chinese folk culture
http://www.chinesefolkculture.com/index.asp