Yesterday's subscription to the dynamic morning and evening respectively gave Bitcoin 69000 and 68000 long, both times were successful at least 1000 points of profit each time, and prompted that the near future is to do short-term contracts, don't take too long, the evening prompt morning 69000 for the second time is not available, the next time you need to 68000 around, a dynamic has been written so clearly, do the contract can be profitable twice