Penetrate the psychological black hole of behavioral finance and use advanced derivatives rules to build a rational trading defense line! This article provides in-depth compliance knowledge on the asset-light logic of "pure cash spread settlement, no ownership transfer" of Contracts for Difference (CFD). It comprehensively dismantles the emotional traps of loss-making luck and retaliatory trading, details how to use the historical maximum retracement red line and long-term risk control stability to screen social traders, helping you replace subjective impulses with iron law.