This is a custom in the north, like Jinan, where there is a saying that the sedan chair will stay in it.

Then eating jiaozi has many meanings, such as "making friends" in jiaozi, which means having children early, and the shape of jiaozi, which means "reunion", "treasure" and "going out to get rich" and many other auspicious meanings.

Just like eating raw rice before going out in the south (selected from the internet)