What is the story of the adoptive mother unlocking the lock?

The legend goes like this: in the old society, because there was no family planning, the country was poor and the people were poor, and there were few doctors and medicines, and the price difference of health care products was low. Although there were many children, few survived. Some gave birth to five or six or even seven or eight children, and only one or two survived. I don't think this is caused by society. I think this is people's fate.

It means that children are a gift from God and will not die. Some children are named "Lock, Tie, Guard, Pull, Dog Leftover", which means wishing children a long life. Some people are afraid that their lives are thin, and a mother can't afford to raise a child, so she will find another foster mother for the child and let the foster mother lock the child. Locking the child, locking the child, means that the child's life is locked and he will not despair. In the old society, due to the serious preference for boys over girls, more boys wore locks, hoping that they could grow up smoothly and carry on the family line for the future. But there are also a few families with more boys and only one girl, so they prefer girls, so they find foster mothers and wear locks for their daughters. I hope I can grow up healthily and happily. Generally, boys wear "longevity locks" and girls wear "wealth locks". At first, the lock was a solid copper lock, which was shaped like a "concave" and was relatively large. Children's backs are heavy, which makes it inconvenient to move, so people become locked copper sheets, but the copper sheets have a large area, and because children love to run and play, in order to facilitate the hanging of tape, it was finally changed to the form made up by Qian Qing, which has continued to this day. This kind of lock requires the foster mother of the child to choose several colors of thread to weave according to the child's living conditions, and the child can only unlock it when he takes it to the wedding. Nowadays, a tray is usually prepared at the wedding, and then red paper is spread on it, and scissors are wrapped in red cloth, so that the bride and groom can untie each other's "long life and prosperity". Why did you unlock the lock at the wedding? Because marriage can prove that you have grown up, married and carefree, there is no need to lock it, so I opened it. And people gave the couple the best sustenance.