Flying back from Beijing, I had bought a lot of books. I filled my bags with it, so they were very heavy. When the agent came to try to check my backpack, he casually grabbed it, and fell on the conveyor belt trying to lift it. He looked at me with shock. "I'm done", I thought. He opened the bag, and saw a box of zongzi the university gave me, on top of the books. He instantly became radiant, gave me a pat on the back, and just indicated the way.