What is the origin of steamed dumplings?

Eating zongzi is a traditional activity of the Dragon Boat Festival. There is a legend that during the Spring and Autumn Period and the Warring States Period, there was a patriotic poet Qu Yuan who was deeply loved by people when he was alive. After he threw himself into the river, people threw zongzi into the water every year because they didn't want his body to be eaten by fish. Grandpa said that farmers in the Qin Dynasty later wrapped rice in bamboo leaves or awn leaves for the convenience of working in the fields, and cooked it and carried it with them as dry food. This is the earliest steamed dumpling.