What does it mean to pack coins in rural areas for the New Year and pack jiaozi?

Our hometown and countryside also have the custom of wrapping jiaozi in the Spring Festival. It is said that whoever eats jiaozi wrapped in coins will be the happiest in the new year. Of course, this only represents a good wish and blessing. In our hometown, every household begins to prepare jiaozi on New Year's Eve. You can choose from meat stuffing (usually Chinese cabbage and green onions) and vegetarian stuffing (leek eggs and shredded pumpkin). Then several parents, brothers and sisters at home get together in a lively way, some make dough, some roll dumpling skins, and some specialize in wrapping. Haha, it's fun. At this time, my mother always takes out a brand-new coin, scalds it with boiling water, and then wraps jiaozi-this jiaozi with coins will not be ready until the early morning of New Year's Day. No matter who eats jiaozi in the morning of the first day of junior high school, the family members will show envious expressions, and then wish the people who eat it all come true in the coming year. Jiaozi, who doesn't eat it, sometimes wants to pack more coins. How I wish jiaozi could come to his bowl. Until now, we have this custom. Sometimes, however, instead of wrapping coins in jiaozi (perhaps for fear of accidentally biting your teeth, hehe), things like peanuts and jujubes are replaced.