For several hundred years now, people have been melting down found or bought gold into bars. This allows for easier storage. As a curiosity, the most common gold bars are about 12 kg. So they are very heavy. If someone has a lot of such bars, they give them to the vault in the bank. They are very well guarded in the bank. Now grab your crayons and paint a picture, you can draw a large gold bar vault in the background.
