Reduce the double-edged sword of derivatives leverage and use a quantitative risk control matrix to build a red line for capital security! This article deeply complies with the three core risk control methods of Contracts for Difference (CFD): a position calculation model that strictly limits the maximum loss of a single transaction to no more than 2% of the total capital, a periodic callback plan that uses the CFD bearish short-selling mechanism to hedge stock spot positions, and a stop-profit and stop-loss strategy based on structural support, resistance and movement tracking, to help you use mechanical discipline to defeat the inner demons of a lucky individual.