And was cheated by 39 thousand. Let the programmer teach me how to operate first, how to buy up and buy down, and finally say that my profit doesn't match their data, so I need to fill this loophole and add 19000 yuan, and then I will do the specific operation. Finally, I said that the profit didn't match the data. Shit, I couldn't get it out. Finally, I froze my account. I was cheated. Blame yourself for being stupid and greedy for money.