Buying 10 hands is equal to seeing more, and you can make money if you go up.

When it falls to 80, you owe it to 20 yuan.

120 at most, and you earn 20.

If you sell 10 lots, it is equal to shorting, and you can make money if you fall.

Down to 80, you earn 20.

Gundam 120, sorry, you read it wrong, losing 20.