There was a small mistake in signal judgment, and within twenty minutes, I shorted SIREN twice in a row, which was blown up by the market maker. Fortunately, I had set a 20% stop-loss. Originally, there was a 'cooling-off period'; after the first liquidation, it wouldn't happen again in the short term. But just at the right moment, the cooling-off period was reset, which is also a place that needs adjustment later. #量化