It is a common sense that gold is very percious and now more and more people like the gold metal, and more and more people now join ge group of hunting for treasure and gold. This is like the "gold rush". But what is different form before is that now people use more advanced equippmemt to help them to find the gold. And it seems among different equippments, people like the gold metal detector most, because that such a device can help them to identify the detail information of the metal so that people can find it in a short time.