According to the provisions of the Civil Law, minors over the age of 8 are persons with limited capacity for civil conduct. When selling important things, the other party must confirm with his family and admit his agency. It is invalid to sell valuables brought by children without parents' consent. Parents have the right to recover everything their children sell, and the gold shop should give them an appropriate refund. The court acts according to the rules, and it is impossible for everyone to escape.
Once the boss refuses to acknowledge the ratification notice, he is always on the verge of crime. Failure to return the corresponding items is suspected of committing a crime, and parents can ask the antique shop to return them through litigation. What the boss should understand is that children's money must not be earned indiscriminately. Cheating will eventually get what it deserves. You must not confuse cheating with bad behavior. Everyone has to pay a certain price for what he has done, so the boss must not be too black-hearted.
Generally speaking, when grandparents take care of their children, they must put precious things where children can't get them. If there is a small box at home, grandparents must lock valuables in the box. The key must be carried with you, because children don't know what things are for when they are young. Although grandparents love children very much, don't indulge in love. If a teenager's grandparents don't give their children pocket money at ordinary times, then he won't come up with such a way to exchange money.