What is the purpose of opening a lock (folk custom)?

Since we are talking about unlocking locks, we have to talk about padlocks. Padlocks are made by a knowledgeable mother who ties a blue string to an ancient coin after the child is born and puts it on the Guanyin or Zao In front of the king, after burning incense and offering sacrifices, my good friend’s mother muttered something to the effect of wishing my children to grow up healthily and smoothly. Usually, the first child in the family, or a child who is particularly valued by the family, is the one who wears the lock. Some children who have been in poor health since childhood will also wear the lock. It is said that if they hang it, they will not get sick. Some people who value their children very much will go to the mountains to ask old monks to help them hang them. Those are professionals, and they should do better and more effectively. There are also those who choose a godmother for their children and ask the godmother to help with the funeral. In this kind of activity, we here always talk about who the child is sent to, "My child was sent to the Kitchen God, where is your child?" "My child was sent to Guanyin." Maybe it means to entrust the child to the gods. Let the gods bless your children to grow up healthily. From then on, every year on the child's birthday, a blue string should be tied around the child's neck. A few coins should be tied around the child's age, placed in front of Guanyin or Stove God, burned with incense, and then worn around the child's neck until they were 12 years old. It is said that we are 12 years old, but it is actually 11 years old. In my hometown, it is 10 years old, because our Chinese tradition is to talk about false years. On the day of opening the lock, it would be much more complicated to hold a party. At home, we have to pierce Guanyin, bake dry biscuits, cook vegetables and make dumplings, and recite Buddha's name. Some people have to make trouble for three days. It is much simpler if there is no ceremony. Generally, a new dustpan and a new broom should be prepared at home for the ceremony. On the child's birthday, usually the child's aunts, uncles, uncles, grandparents, and grandparents will come over. The family must prepare ten bowls of vegetables for the Kitchen God to offer as offerings, five vegetarian, five meat, ten longevity peaches, and ten jujube rolls. Then the mother, a knowledgeable good friend, begins to sing. These songs are euphemistic, melodious, and unique. Flavor. Due to space limitations, I will tell you the specific lyrics another day. The general idea is to keep disasters and ups and downs away from children. While singing, you have to take a new broom and sweep it up and down symbolically. After singing a section, open the lock for the child, let the child stand up, and put something to eat in his mouth. When my brother was a child, he had fried dough sticks in his mouth. Nowadays, children can’t eat fried dough sticks. My niece has a fried dough stick in her mouth. biscuit. Then, he put the dustpan on the child's head and hit it with the broom. The child ran behind the gate and ate the food secretly. After eating, he comes back, sings for a while, burns some gold ingots and paper money, and burns the child's lock. This is the completion of the ceremony in front of the Stove King. Then go to the heaven and earth in the middle of the courtyard and sing for a while, which is the end of the whole ceremony. After preparing lunch, the family happily ate a meal, saying it was for the children to chew.