Gold has risen to a high level. If it is predicted to come down, you can sell the contract first and wait until the low level to buy back gold. If the price of gold falls, you can buy back the gold sold at a high price at a low price and earn the difference.

The so-called short selling of gold simply means that investors can sell gold first and then buy it within the agreed time limit in the future according to the trading rules without actually holding it.