Why eat zongzi? It's a long story, and it's late at night here, but the general gist is that (in the story) these reed packets of sticky rice were thrown into the water to distract the fish from eating the body of some (popular) chap who had drowned. The roots are traditionally eaten on this day as a medicine tonic soup. And the haocao? That's a couple of pieces of long grass (one a reed, the other a fragrant smelling herb) hung on the front door as a good luck charm. Still no Dragon Boats though - maybe next year.