It means to terminate the contract.

The contract in digital currency is similar to a futures contract. It is a kind of financial derivative. The object of the transaction is not the physical object, but the rise and fall of the commodity price. It can be long or short, and can be bought and sold at any time, such as It is said that investors can buy a rising contract if they judge that a certain currency will rise. If the price rises, the investment can make a profit. It should be noted that contract transactions generally carry leverage, so the risk will be relatively high. Currently, the minimum leverage in digital currencies is 3 times and the maximum is 100 times.

Contracts are divided into two types, one is the delivery contract and the other is the perpetual contract. The delivery contract has a delivery period, just like futures. When the delivery time comes, it will be automatically liquidated. The contract has no time limit. The contract is to buy long and buy short. If the market goes up, you will make money if you buy long. If the market goes down, you will make money if you buy short. Then you can add leverage to trade. You can choose the leverage multiple freely. Different leverage multiples have different risks. The contract is actually optimized on the basis of leverage trading, allowing users to better operate buying and selling. Compared with the spot, the contract has an additional option of short buying (the so-called short buying means buying down), so it is more flexible than the spot. a little.