I didn't understand why there was a price limit before, but today I seem to understand. Today I was limited, and before the limit, I had just placed 130 trades to participate in a competition. To save time and prevent complications later, I used system-recommended prices. In less than half an hour, that’s equivalent to a total of 260 trades. I was trading too quickly and was deemed to be using technology, and my fingers hurt from clicking. The three competition tickets have worn out more than 120 units. And there's still a limit on control, what bad luck.