Penetrate the capital efficiency barriers of traditional financial positions, and use digital lightweight mechanisms to reconstruct the cross-market game exposure of small and medium-sized investors! This article provides in-depth compliance knowledge on the three underlying capital trading rules of Contracts for Difference (CFD): dismantles the "small and big" leverage principle of using initial margin to establish positions of several times nominal value, analyzes the inclusive value of low initial deposit standards for beginners in reducing practical trial and error costs, and provides a panoramic view of the flexible risk control model that distinguishes fixed and dynamic margins to help you establish a refined available capital plan and avoid the risk of passive liquidation.