The four lines of the gold chart represent four data, namely the opening price, the highest price, the lowest price and the closing price. All K-lines are centered around these four data, reflecting the general situation and price information. If you put the daily K-line chart on a piece of paper, you can get the daily K-line chart, and you can also draw the weekly K-line chart and the monthly K-line chart.

Gold futures refer to futures contracts with the gold price in the international gold market as the transaction target at a certain time in the future. The profit and loss of investors buying and selling gold futures is measured by the difference between the time of entry and exit, which is the physical delivery after the contract expires.