When it comes to playing contracts, there are a few suggestions.

1. Try not to play if you can't play, and the spot can also have a good income, and the mentality will be better;
2. If you must play the contract, you can play with the income of the spot, double the spot of the 10w principal, earn 10w, you can take 20% of the profit to play, and if you lose the 20%, you can continue to play the spot, and the next time you make a profit, you will play with 20%.