Before the market opened the next day, your account was actually 2000 yuan short. If the price rises to 1800 after the opening, you will have a floating profit of 2000 yuan. At this point, the floating right (fund) of your account is 3600 yuan. Before the stock price rises to 1900, you can't earn back the lost 2000 yuan.

But let's be clear: if you only have 3,600 yuan, if you lose 2,000 yuan after settlement, you will only have 1.600 yuan in your account, which is not enough for the first-hand margin (1.700 yuan), and your futures company will issue a notice to add the margin. If the margin is not added in time, the futures company may force the liquidation at the right time.