1. Preservation and storage: As a precious metal, gold is used as a medium of exchange for money and commodities because of its scarcity. When buying gold, many people will choose to buy physical gold for preservation and storage in case of economic recession or inflation.

2. Investment and trading: Gold is a tradable commodity because its price is relatively stable and the trading market is relatively mature. By buying gold, people can earn the difference between the price of gold and the price of gold or gain income through the quantitative trading of gold.

3. Widely used: Gold is widely used in jewelry, ornaments, medical care, electronics, aerospace, chemical industry, art and other fields.

4. Stabilize the investment portfolio: Gold is usually used as a part of the investment portfolio as a means to spread risks to protect investors from market fluctuations.

Generally speaking, gold is a precious asset that has stood the test of time and is regarded as a stable and reliable investment by many people.