Reject the confusion of financial cognition and understand the asset-light operation and social copying ecology of Contracts for Difference (CFD) in one article! This article provides in-depth science knowledge on the underlying logic of spread settlement without physical delivery, and dismantles the profit-making mechanism of long-short two-way trading in bear markets. At the same time, it blindly follows the blind spots of short-term profiteering fake masters, explains in detail the screening criteria for high-quality traders based on the largest historical drawdown and long-term comprehensive winning rate (more than 6 months), as well as the long-term stable realization path of traffic support and performance profit sharing.