Hill's guardianship contract is safe. The core business of Hill Group can be summarized into two parts. One is fund custody. The second is quantitative trading. In order to provide better and more convenient asset management services, Hill Trading is a training and education institution based on the global financial derivatives market. In the curriculum system, entanglement theory is the core of technology, which is introduced to the world for the first time. Pro-contract transaction is a derivative transaction, which is a standardized product based on digital currency. It covers the price and target of the transaction. Different from traditional futures, it is divided into fixed-term contracts with delivery ri and perpetual contracts without delivery ri. Forward contracts are compulsory delivery and liquidation when the agreed time expires, and are mainly used to protect the hedging function of spot risk exposure. However, the permanent contract has no expiration and settlement ri, which is similar to the spot market with margin. Using its leverage, we can find out the future price of digital currency and get high profits.