When you have money, you can use gold jewelry as jewelry, when you have no money, you can use it as jewelry, and when you have no money, you can realize it, which reflects the advantages that gold can be realized and preserved. Gold is a simple form of chemical element gold, which is a soft, golden yellow and corrosion-resistant precious metal. Gold is a rarer, more precious and more valuable metal. Generally speaking, the gold in the world is in ounces. In ancient China, gold was measured in ounces, which was a very important metal. It is not only a special currency for reserve and investment, but also an important material for jewelry industry, electronics industry, modern communication and aerospace industry.