Recently, many people have started to do contract transactions. A friend of mine made $30,000 on the contract.
His method is very simple, just buy in the event of a big drop.
It rose sharply, and he sold it again, basically buying it right.

I tried his method and made $500,
If you also want to make money by playing cryptocurrency contracts, we can communicate together.
For cryptocurrency contracts, what are your good ways to make money?