1, "jiaozi getting on the bus, getting off the bus" means: when seeing off, give jiaozi to the people who are seen off, and give noodles to the people who are picked up when you are greeted.

2. In ancient times, jiaozi could only be enjoyed on major festivals. Therefore, when people are about to leave, they show their respect to people by sending them off with jiaozi. Noodles symbolize "long" and "often", which means that we can reunite for a long time from now on.