As for the liquidation on August 9th complained by the client, The bid-ask spread varied with market conditions as the market price fluctuated dramatically on that day. After investigation, the reason for the liquidation is that when the client sent a trading order, the trading system would automatically trade at the first quotation, and our company would close the order price for the client within the largest possible range. However, the transaction price may also deviate from the client's order price due to market fluctuations.

I stopped loss at 1748 on Friday. But actually the platform changed it to 1693 at 7:00 on August 9. This led to account liquidation.