China is the world's largest producer of the precious metal, but of late its central bank has been buying up large quantities. So what is it doing with it?
Gold is used in a lot of other things than money and jewelry. For example, a sizable portion of the world's supply is used in electronics like cellphones and computers.
But when money fails (hyperinflation, sanctions, digital collapse, bank failures, violent revolution, etc.), countries who already have gold reserves will be the only ones with anything of value.
Beyond that, just by virtue of the fear of any of those events or general international turmoil rising, the value of gold rises, too, as one of very few stores of wealth that can survive any such event. Investing in gold is a great low-risk move for guaranteed returns on huge reserves.
Edit: I don't know why people are downvoting this lol. Talk to literally anyone in finance.
US Treasury bonds: if the US government fails you'll have bigger problems than money. You don't need to worry about that scenario. You'll win the lottery first.
Pay off a loan: by paying off your principal early you can guarantee that you pay less interest in the future.
Buy something that saves you money: if you like cooking, an herb garden will save you a lot of money. If you like sweets, baking equipment will do the same.
Yes, savings are usually better if for some reason you are forced to choose only one. But they are generally used together. A penny saved is worth even more if it is used to generate a return.