What are the reasons for the northern customs to eat jiaozi and jiaozi?

New Year's Eve: jiaozi, commonly known as "30 years old", is usually a day for family reunion during the Spring Festival. After the New Year's Eve dinner, jiaozi will be wrapped, and it will be wrapped in place this year. You must eat it. There is a custom to put something, such as coins or tofu, in the jiaozi when wrapping jiaozi. Whoever eats during the Chinese New Year will have good luck and get lucky. It indicates happiness and joy in one year, good luck and bright prospects in the coming year! ? Day 1: Eat jiaozi in the morning, the color is good! Also because I went home for the New Year, I closed the stall early. By the way, I cleaned the jiaozi I packed last night in the morning. . ? The fifth day: commonly known as "breaking the fifth day", there are many customs and taboos in the New Year. On the day of breaking the fifth child, all children will be terminated and firecrackers will be set off to drive away bad luck. There is also a saying that people should keep their mouths shut, so they should eat jiaozi. ? Lantern Festival: Fifteen people get together in the first month, and the whole family is together again, so we should not only eat Yuanxiao, but also eat jiaozi. ? The second day of February: The dragon looks up, cuts his hair and eats jiaozi. Spring is coming! Eat jiaozi! ? Fu Tou: Fu Tou and jiaozi are negative, Sanfu pancakes roll eggs, and Fu Tou must eat jiaozi. Summer is coming! Eat jiaozi! ? Beginning of autumn: As the saying goes, after the bitter summer, come to jiaozi first! Autumn is coming! Eat jiaozi! ? Winter solstice: there is a folk saying that "autumn harvest and winter storage" The solstice of winter is not a jiaozi bowl, who cares whether the ears are frozen or not ... Winter is coming. . Eat jiaozi. . ? Twenty-three: The twenty-third of the twelfth lunar month, candy is sticky, and the twenty-third of the twelfth lunar month is also called off-year, so why eat jiaozi?