If you register or bind your mobile phone, you can try it for 7 days for free. During the trial period, you can use all the data (from 2008 to now) to reorder. After the use period, only the data of the last 30 trading days can be used to re-order.

If it feels good, you can consider the paid version. When I first came into contact with futures, I made a simulation with my heart, and it was also good to make a double offer with my heart.